problems solved by programming

20 Code Challenges To Put What You’re Learning to the Test

• Share article on Twitter
• Share article on Facebook
• Share article on LinkedIn

Code challenges help you build problem-solving skills, better understand the programming language you use, and get to know algorithms you may not be familiar with. If you want to improve your skills in programming, there’s no better way than by writing code. In addition, coding challenges are convenient because they allow you to exercise your skills on a bite-sized problem and rarely require you to build a complete application, so you can usually complete them rather quickly.

Code challenges are also part of most coding interviews. Hiring managers may see the skills listed on your resume, and you may be able to talk like a programmer, but they also want to know that you can write code. By having you solve a coding challenge, they can assess your skills and be sure you can do the job. So working on coding challenges will also help you prepare for job interviews. We’ve collected 20 popular code challenges to get you started.

Learn something new for free

Intro to chatgpt, general programming challenges.

While most code challenges are small in scope, that doesn’t mean they won’t involve a complex solution, so it is best to choose a challenge that stretches your skills but isn’t completely out of your league. Below, we’ve ranked a few coding challenges by their complexity so you can find the best challenge for your skill level.

Basic code challenges

These are good beginner challenges. They may not actually show up in a coding interview, but everyone has to start somewhere. These challenges are good for practicing your skills at using a programming language.

• Build a binary search tree .
• Write a program that prints the numbers from 1 to 100. But for multiples of three, print Fizz instead of the number, and multiples of five, print Buzz. For numbers that are multiples of both three and five, print FizzBuzz .
• Print Hello World in several different ways in a programming language .
• Code in a new language .
• Write a function that will take a given string and reverse the order of the words .
• Write a function that will find the 50th number in the Fibonacci Sequence .
• Write a function that tests if a number, n, is a prime number .

Intermediate code challenges

These code challenges are examples of what might be asked in interviews. There may be a big difference in difficulty compared to the basic challenges. If you get stuck on these, go back to the basics, practice more, and you will get there.

• Write a function to check that a binary search tree is balanced .
• Write a function to reverse the order of words that have punctuation and keep the punctuation in place .
• Given two words (beginWord and endWord) and a dictionary’s word list, find the length of the shortest transformation sequence from beginWord to endWord .
• Write a function that will find the nth number in the Fibonacci Sequence .
• Write a function that will print out all prime numbers in a given string .

Hard code challenges

The point of these challenges is to challenge you, which will help you learn more. These will be similar to the type of work you’ll do on the job. Most of these challenges will be hard but use Big O notation and expect a certain type of performance. If you are struggling with these, search StackOverflow or Google for direction. Many developers have run into these types of problems and will help you find the solution. Just don’t cheat and copy the answer. What good would that do?

• Write a function that inserts a list of n numbers into a binary search tree that runs at O(n log n) time .
• Write a function to reverse the order of words with punctuation and keep the punctuation in place that runs at 0(n) time .
• Write a function that will find the nth number in the Fibonacci Sequence and runs at O(n) time .
• Write a function that tests if a number, n, is a prime number and a function that will print out all prime numbers in a given string as efficiently as possible .

Technology specific challenges

If you want to try some coding challenges that will test your skills on specific technologies, we have a few of those challenges.

Web development code challenges

• Build a web page for your favorite band . A fun challenge can be creating a webpage for your favorite musical artist. Start by using only static HTML , and if you want to challenge yourself, even more, add CSS and JavaScript . Then, for extra credit, build it in a front-end framework like React and make it an interactive experience.
• Recreate a magazine layout using Semantic HTML and CSS Flexbox . It is not always that easy to recreate a design. This code challenge will really test your skills with HTML and CSS by having you recreate a design from scratch on your own. Once you are a working web developer, you will be doing this daily.
• Build a static portfolio site . Once you finish the first two web development challenges listed here, you will have demonstrated your skills in web development. So why not take it a step further and show off those skills to the world or a potential employer by building a portfolio site? With this challenge, you will do just that. You can use HTML and CSS and, if you want, JavaScript. If you need help creating a portfolio, watch the video below for a step-by-step tutorial. And if you want to learn how to use JavaScript to make it interactive, check out Part 2 .

Financial data analysis code challenges

Maximize stock trading profit . This is reportedly a question asked in a Google interview and will test your skills in analyzing financial data . There are three levels to this challenge:

• Basic: Given the daily values of a stock, write a program that will find how you can gain the most with a single buy-sell-trade.
• Intermediate: Given the daily values of a stock over several days n , write a program that will find how you can gain the most with a combination of buy-sell trades.
• Hard: Complete both the basic and intermediate algorithms in the most efficient way possible.

Code challenges are a great way to practice your coding skills or keep yourself from getting rusty. Building complete applications will also teach you a lot, but they can take time to finish. On the other hand, a coding challenge can be completed in an evening and will expose you to new algorithms and programming concepts. They are also part of many coding interviews, so completing a few can help you prepare for a job interview. For more details on the code challenges we have, check out Essential Information on Code Challenges .

Whether you’re looking to break into a new career, build your technical skills, or just code for fun, we’re here to help every step of the way. Check out our blog post about how to choose the best Codecademy plan for you to learn about our structured courses, professional certifications, interview prep resources, career services, and more.

Related courses

Learn to code with blockly, choosing a programming language, choosing a career in tech, subscribe for news, tips, and more, related articles.

Why Database Schemas Are Important & Types to Know About

Data is only as useful as the database it’s stored in. Here are some best practices for designing your own.

The Most Important Soft Skill for Developers & How to Get Better at It

Try these problem-solving strategies the next time you’re feeling stuck.

Learn Essential Professional Skills in 70+ New Free Courses

Improve your soft skills like communication, leadership, and problem solving in these new free courses. 

8 Organizations Helping Girls & Women Build Careers in Tech

There’s a gender gap in tech — but it’s getting smaller thanks to organizations like these.

5 Ways to Stay Accountable to Your Learning Goals in 2024

Planning to learn to code in 2024? We’ve put together a list of 6 tips and resources to help you stay accountable to your coding goals this year.

30 Bite-Sized Goals for Learning to Code in 2024

It’s that time of year again — the time for making New Year’s resolutions! This year, let’s resolve to make resolutions we can keep.

6 High-Paying Jobs You Can Get Without a Degree

Learn about some of the high-paying jobs you can get without needing a degree. Discover what each job entails and how you can succeed with our classes.

75 Basic Programming Problems and Tutorials for Practice

Varun Saharawat is a seasoned professional in the fields of SEO and content writing. With a profound knowledge of the intricate aspects of these disciplines, Varun has established himself as a valuable asset in the world of digital marketing and online content creation.

Solving Basic Programming Problems is the key to achieve success in coding challenges. Students must practice these basic programming problems!

Basic Programming Problems: Engaging in code challenges offers many benefits, serving as a dynamic tool to enhance problem-solving proficiency, deepen your comprehension of the programming language you work with, and acquaint yourself with diverse algorithms. If you aspire to elevate your programming skills, immersing yourself in coding is the most effective avenue.

The beauty of basic programming problems lies in their convenience—they provide a platform to hone your abilities through bite-sized problems, often eliminating the need to construct entire applications. This characteristic allows you to conquer these challenges swiftly, fostering a sense of accomplishment.

Moreover, code challenges are integral components of many coding interviews.

While your resume may showcase your skills and ability to articulate programming concepts, employers want to validate your practical coding capabilities. Tackling coding challenges during interviews becomes a testament to your proficiency and showcases your competence for the role.

Therefore, incorporating coding challenges into your routine sharpens your skills and is an invaluable preparation strategy for job interviews. To kickstart your coding journey, we have curated a collection of popular basic programming problems to pave the way for your continued growth.

Table of Contents

Recommended Technical Course

• Full Stack Development Course
• Generative AI Course
• DSA C++ Course
• Data Analytics Course
• Python DSA Course
• DSA Java Course

Basic Programming Problems Overview

Basic programming problems provide an essential foundation for individuals learning to code, offering a practical and hands-on approach to mastering fundamental concepts in programming.

These problems are designed to introduce beginners to the core coding principles, gradually building their problem-solving skills and comprehension of programming logic.

Whether you are a novice looking to embark on your coding journey or an experienced programmer aiming to reinforce your foundational knowledge, engaging with basic programming problems is a valuable practice.

These problems typically cover essential topics such as data types, loops, conditionals, functions, and basic algorithms, providing a well-rounded introduction to the key building blocks of programming.

The significance of basic programming problems extends beyond mere skill development; it serves as a stepping stone for individuals aspiring to pursue more advanced coding challenges and projects.

By grappling with these foundational problems, learners can cultivate a solid understanding of programming fundamentals, laying the groundwork for future exploration and mastery of more complex coding concepts. Basic programming problems are the cornerstone of a programmer’s educational journey, fostering a strong and resilient coding skill set.

Basic Programming Problems for Beginners

Starting your career in the programming field is  exciting and challenging. For beginners, mastering the basics is crucial, and what better way to do so than by solving basic programming problems ?

Basic Programming Problems Java

Here are some of the basic programming problems JAVA :

1) Hello World:

public class HelloWorld {

    public static void main(String[] args) {

        System.out.println(“Hello, World!”);

2) The sum of Two Numbers:

Add two numbers and print the result.

public class Sum {

        int num1 = 5, num2 = 10, sum;

        sum = num1 + num2;

        System.out.println(“Sum: ” + sum);

3) Factorial of a Number:

Calculate the factorial of a number.

public class Factorial {

        int num = 5;

        long factorial = 1;

        for (int i = 1; i <= num; ++i) {

            factorial *= i;

        System.out.println(“Factorial: ” + factorial);

4) Check Even or Odd:

Determine if a number is even or odd.

public class EvenOdd {

        int num = 8;

        if (num % 2 == 0) {

            System.out.println(num + ” is even.”);

        } else {

            System.out.println(num + ” is odd.”);

5) Reverse a String:

Reverse the characters in a given string.

public class ReverseString {

        String str = “Hello”;

        StringBuilder reversed = new StringBuilder(str).reverse();

        System.out.println(“Reversed String: ” + reversed);

Here are some theory-based basic programming problems Java:

1) Differences Between C++ and Java

• C++: Not platform-independent, follows “write once, compile anywhere.”
• Java: Platform-independent byte code allows programs to run on any machine.

Languages Compatibility:

• C++: Compatible with most high-level languages.
• Java: Incompatible with most languages, comparable to C and C++.

Interaction with the Library:

• C++: Direct access to native system libraries, suitable for system-level programming.
• Java: Requires Java Native Interface or library access, not direct call support.

Characteristics:

• C++: Combines features of procedural and object-oriented languages.
• Java: Known for automatic garbage collection, lacks support for destructors.

Semantics of the Type:

• C++: Consistent semantics for primitive and object types.
• Java: Inconsistent semantics between primitive and object types and classes.

Compiler and Interpreter:

• Java: Compiled and interpreted language, source code compiles into platform-independent bytecode.
• C++: Purely compiled language, source program compiles into object code, further executed.

2) Features of the Java Programming Language:

• Easy: Java is considered easy to learn, with fundamental Object-Oriented Programming (OOP) concepts.
• Secured Feature: Java provides a secured feature, ensuring the development of virus-free and tamper-free systems.
• OOP: Java follows Object-Oriented Programming, treating everything as an object.
• Independent Platform: Java compiles into platform-independent bytecode, interpreted by the Virtual Machine.

3) ClassLoader in Java:

• A ClassLoader in Java is a subsystem of the Java Virtual Machine responsible for loading class files during program execution.
• It is the first to load the executable file and includes Bootstrap, Extension, and Application classloaders.

4) Differences Between Heap and Stack Memory in Java:

• Stack Memory: Allocated to each individual program. Fixed memory space.
• Heap Memory: Not assigned to Java code initially but available during runtime. Used as needed by the Java code.

Embark on a transformative journey with our comprehensive course, “ Decode Java+DSA 1.0 ,” meticulously designed to empower you with the skills needed to excel in programming. This course seamlessly integrates Core Java and Data Structures and Algorithms (DSA), offering a holistic learning experience that lays a robust foundation for your programming journey.

Key Features:

• Comprehensive Java Coverage: Delve into the intricacies of Core Java, unraveling the language’s syntax, features, and object-oriented programming concepts. From basic constructs to advanced topics, this course ensures a thorough understanding of Java.
• Powerful Problem-Solving with DSA: Unlock the potential of Data Structures and Algorithms to efficiently solve complex problems. Acquire the essential tools and strategies to approach real-world challenges with confidence and precision.
• Hands-On Learning: Immerse yourself in practical, hands-on exercises that reinforce theoretical concepts. Through coding exercises and projects, you’ll apply your knowledge, fostering a deeper understanding of both Java and DSA.
• Expert Guidance: Benefit from expert guidance provided by seasoned instructors with extensive industry experience. Learn industry best practices and gain insights into the practical applications of Java and DSA.

Who Should Enroll:

• Programming Enthusiasts
• Students Pursuing Computer Science or Related Fields
• Professionals Seeking to Strengthen Core Java and DSA Skills

Upon completion of “ Decode Java+DSA 1.0 ,” by PW you’ll emerge as a proficient programmer equipped with the skills to tackle diverse programming challenges. Whether you’re aiming to kickstart your programming career, enhance your academic pursuits, or upskill for professional growth, this course is your gateway to mastering Java and DSA. Elevate your programming prowess and embark on a journey of continuous learning and innovation.

Basic Programming Problems in C

The table below shows the basic programming problems in C :

Put your learning into action with hands-on projects that simulate real-world scenarios with Decode Full Stack Web Dev 1.0 by PW . From designing responsive user interfaces to implementing robust server-side functionalities, you’ll gain practical experience that enhances your proficiency.

Learn essential tools like Git for version control, ensuring collaborative and efficient development. Explore deployment strategies to showcase your applications to the world, covering platforms like Heroku.

Who Should Enroll

• Aspiring Web Developers 
• Computer Science Students 
• Professionals Transitioning to Web Development 
• Entrepreneurs Looking to Build Web Applications

Basic Programming Problems in Python

In addition to introducing you to Python’s syntax and structure, tackling basic programming problems in Python helps you improve your problem-solving skills. With tasks ranging from basic logic puzzles to intricate algorithmic difficulties, these issues offer an interactive method of learning Python and put you on the route to becoming a skilled programmer.

Basic Programming Problems in Javascript

Whether you aim to enhance your web development skills or explore the vast world of JavaScript applications, these problems cater to beginners, guiding them through the foundational aspects of programming in this versatile language. Below table showcases the basic programming problems in Javascript :

Embark on a transformative learning experience with our comprehensive course, “Building MicroServices in Java for Cloud .”

Key Highlights

• Microservices Fundamentals: Gain a solid understanding of microservices architecture, learning how to decompose large applications into smaller, independently deployable services. Explore the principles and benefits that drive the adoption of microservices in modern software development.
• Java for Microservices : Leverage the power of Java to build robust microservices. Explore Java frameworks and libraries that facilitate the development of scalable and efficient microservices, ensuring seamless integration with cloud platforms.
• Communication Strategies: Delve into various communication patterns and protocols essential for microservices interactions. Learn about RESTful APIs, messaging queues, and other communication mechanisms used to establish seamless communication between microservices.
• Software Developers and Engineers
• System Architects
• Cloud Enthusiasts
• Java Developers Exploring Microservices

Basic Programming Problems and Solutions

Here are 10 basic programming problems along with their solutions:

• Hello World:

Problem: Write a program that prints “Hello, World!” to the console.

Solution (Python):

print(“Hello, World!”)

• Sum of Two Numbers:

Problem: Write a program that inputs two numbers and prints their sum.

Solution (Java):

import java.util.Scanner;

public class SumOfTwoNumbers {

        Scanner scanner = new Scanner(System.in);

        System.out.print(“Enter first number: “);

        int num1 = scanner.nextInt();

        System.out.print(“Enter second number: “);

        int num2 = scanner.nextInt();

        int sum = num1 + num2;

• Factorial of a Number:

Problem: Write a program to calculate the factorial of a given number.

Solution (C++):

#include <iostream>

using namespace std;

int factorial(int n) {

    if (n == 0 || n == 1)

        return 1;

        return n * factorial(n – 1);

int main() {

    int num;

    cout << “Enter a number: “;

    cin >> num;

    cout << “Factorial: ” << factorial(num) << endl;

    return 0;

• Check Even or Odd:

Problem: Write a program that checks if a given number is even or odd.

Solution (JavaScript):

let number = 7;

if (number % 2 === 0) {

    console.log(number + ” is even”);

    console.log(number + ” is odd”);

• Reverse a String:

Problem: Write a program to reverse a given string.

original_string = “Hello, World!”

reversed_string = original_string[::-1]

print(“Reversed String:”, reversed_string)

• Fibonacci Series:

Problem: Generate the Fibonacci series up to a specific limit.

public class FibonacciSeries {

        int limit = 10;

        int firstTerm = 0, secondTerm = 1;

        System.out.println(“Fibonacci Series up to ” + limit + ” terms:”);

        for (int i = 1; i <= limit; ++i) {

            System.out.print(firstTerm + “, “);

            int nextTerm = firstTerm + secondTerm;

            firstTerm = secondTerm;

            secondTerm = nextTerm;

• Check Prime Number:

Problem: Write a program to check if a given number is prime.

def is_prime(number):

    if number > 1:

        for i in range(2, int(number / 2) + 1):

            if (number % i) == 0:

                return False

        else:

            return True

        return False

if is_prime(num):

    print(num, “is a prime number.”)

    print(num, “is not a prime number.”)

• Find Maximum Element:

Problem: Write a program to find the maximum element in an array.

int findMax(int arr[], int size) {

    int max = arr[0];

    for (int i = 1; i < size; ++i) {

        if (arr[i] > max) {

            max = arr[i];

    return max;

    int numbers[] = {5, 8, 2, 10, 3};

    int size = sizeof(numbers) / sizeof(numbers[0]);

    cout << “Maximum Element: ” << findMax(numbers, size) << endl;

• Palindrome Check:

Problem: Write a program to check if a given string is a palindrome.

public class PalindromeCheck {

        String str = “level”;

        String reversedStr = new StringBuilder(str).reverse().toString();

        if (str.equals(reversedStr)) {

            System.out.println(str + ” is a palindrome.”);

            System.out.println(str + ” is not a palindrome.”);

• Count Vowels and Consonants:

Problem: Write a program to count the number of vowels and consonants in a given string.

text = “Hello, World!”

vowels = “AEIOU

Benefits of Solving Basic Programming Problems

Solving basic programming problems offers numerous benefits for individuals looking to enhance their programming skills. Here are some key advantages:

Skill Development:

• Coding Proficiency: Regular problem-solving helps improve your coding skills and fluency in programming languages.
• Algorithmic Thinking: It fosters the development of algorithmic thinking, enabling you to devise efficient solutions to various problems.

Logical Thinking:

• Problem Decomposition: Breaking down problems into smaller components and solving them enhances logical thinking and problem-solving abilities.
• Pattern Recognition: Regular problem-solving helps in recognizing patterns and similarities between different problems, leading to more efficient solutions.

Learning New Concepts:

• Exposure to Diverse Topics: Programming problems often cover a wide range of concepts, exposing you to different areas of computer science and software development.
• New Algorithms and Data Structures: Exploring various problems introduces you to new algorithms and data structures, expanding your knowledge base.

Preparation for Interviews:

• Technical Interviews: Many technical interviews for programming roles involve solving algorithmic and coding problems. Regular practice prepares you for such interviews and boosts your confidence.
• Coding Challenges: Familiarity with common coding challenges often encountered in interviews is an asset.

Building a Portfolio:

• Showcasing Skills: Solving problems allows you to build a portfolio of solutions that you can showcase to potential employers or on coding platforms.
• GitHub Contributions: Uploading your solutions to platforms like GitHub demonstrates your coding proficiency and problem-solving ability.

Enhanced Efficiency:

• Code Optimization: Regular practice encourages optimization, leading to more efficient and cleaner code.
• Time Complexity Awareness: Problem-solving helps in understanding and considering time complexity, contributing to the creation of scalable solutions.

Community Engagement:

• Online Communities: Engaging in online coding communities allows you to discuss problems, learn from others, and gain insights into alternative solutions.
• Peer Learning: Collaborating with peers on coding challenges can provide different perspectives and foster a collaborative learning environment.

Career Advancement:

• Competitive Edge: Building strong problem-solving skills sets you apart in a competitive job market, enhancing your employability.
• Adaptability: A wide range of problem-solving experiences makes you more adaptable to different tasks and projects.

Personal Satisfaction:

• Sense of Achievement: Successfully solving programming problems brings a sense of accomplishment, boosting confidence and motivation.
• Continuous Learning: It fosters a mindset of continuous learning, crucial in a rapidly evolving field like programming.

In summary, regular practice of solving basic programming problems contributes significantly to skill development, logical thinking, and overall proficiency in the field of programming.

For Latest Tech Related Information, Join Our Official Free Telegram Group : PW Skills Telegram Group

• HTML Anchor Tag – A Complete Guide

HTML anchor tag is considered as an essential element of web linking. Read this article to understand its usage, types,…

• What is C Program For Selection Sort

C program for selection sort: Selection sort is one of the sorting techniques used for arranging the unordered data into…

• What Are Preprocessor Directives In C?

Preprocessor Directives In C are statements generally starting with a ‘#’ hashtag symbol that is c preprocessor directives before the…

Leave a Comment Cancel Reply

Your email address will not be published. Required fields are marked *

Save my name, email, and website in this browser for the next time I comment.

Related Articles

• Back End Web Dev Tutorial: Salary, Roles and Responsibilities
• DevOps Training: How To Become A DevOps Engineer in Six Months?
• Back-End Web Programming in 2024: Examples, Languages, and Much More!
• C Syllabus Foundation, Important Topics, Course- PW Skills 
• A Step-by-Step Guide to Become a Full Stack Developer
• Backend In Web Development: A Beginner’s Guide
• Best Full Stack Developer Classes In Patna

• Basics of Input/Output
• Time and Space Complexity
• Basics of Implementation
• Basics of Operators
• Basics of Bit Manipulation
• Recursion and Backtracking
• Multi-dimensional
• Basics of Stacks
• Basics of Queues
• Basics of Hash Tables
• Singly Linked List
• Binary/ N-ary Trees
• Binary Search Tree
• Heaps/Priority Queues
• Trie (Keyword Tree)
• Segment Trees
• Fenwick (Binary Indexed) Trees
• Suffix Trees
• Suffix Arrays
• Basics of Disjoint Data Structures
• Linear Search
• Binary Search
• Ternary Search
• Bubble Sort
• Selection Sort
• Insertion Sort
• Counting Sort
• Bucket Sort
• Basics of Greedy Algorithms
• Graph Representation
• Breadth First Search
• Depth First Search
• Minimum Spanning Tree
• Shortest Path Algorithms
• Flood-fill Algorithm
• Articulation Points and Bridges
• Biconnected Components
• Strongly Connected Components
• Topological Sort
• Hamiltonian Path
• Maximum flow
• Minimum Cost Maximum Flow
• Basics of String Manipulation
• String Searching
• Z Algorithm
• Manachar’s Algorithm
• Introduction to Dynamic Programming 1
• 2 Dimensional
• State space reduction
• Dynamic Programming and Bit Masking
• Basic Number Theory-1
• Basic Number Theory-2
• Primality Tests
• Totient Function
• Basics of Combinatorics
• Inclusion-Exclusion
• Line Sweep Technique
• Line Intersection using Bentley Ottmann Algorithm
• Basic Probability Models and Rules
• Bayes’ rules, Conditional probability, Chain rule
• Discrete Random Variables
• Continuous Random Variables
• Practical Tutorial on Data Manipulation with Numpy and Pandas in Python
• Beginners Guide to Regression Analysis and Plot Interpretations
• Practical Guide to Logistic Regression Analysis in R
• Practical Tutorial on Random Forest and Parameter Tuning in R
• Practical Guide to Clustering Algorithms & Evaluation in R
• Beginners Tutorial on XGBoost and Parameter Tuning in R
• Deep Learning & Parameter Tuning with MXnet, H2o Package in R
• Decision Tree
• Simple Tutorial on Regular Expressions and String Manipulations in R
• Practical Guide to Text Mining and Feature Engineering in R
• Winning Tips on Machine Learning Competitions by Kazanova, Current Kaggle #3
• Practical Machine Learning Project in Python on House Prices Data
• Challenge #1 - Machine Learning
• Challenge #3 - Machine Learning
• Challenge #2 - Deep Learning
• Transfer Learning Introduction
• Input and Output
• Python Variables
• Conditionals
• Expressions
• Classes and Objects I
• Classes and Objects II (Inheritance and Composition)
• Errors and Exceptions
• Iterators and Generators
• Functional Programming
• Higher Order Functions and Decorators
• +1-650-461-4192
• For sales enquiry [email protected]
• For support [email protected]
• Campus Ambassadors
• Assessments
• Learning and Development
• Interview Prep
• Engineering Blog
• Privacy Policy
• © 2024 HackerEarth All rights reserved
• Terms of Service

Python Programming

Practice Python Exercises and Challenges with Solutions

Free Coding Exercises for Python Developers. Exercises cover Python Basics , Data structure , to Data analytics . As of now, this page contains 18 Exercises.

What included in these Python Exercises?

Each exercise contains specific Python topic questions you need to practice and solve. These free exercises are nothing but Python assignments for the practice where you need to solve different programs and challenges.

• All exercises are tested on Python 3.
• Each exercise has 10-20 Questions.
• The solution is provided for every question.
• Practice each Exercise in Online Code Editor

These Python programming exercises are suitable for all Python developers. If you are a beginner, you will have a better understanding of Python after solving these exercises. Below is the list of exercises.

Select the exercise you want to solve .

Basic Exercise for Beginners

Practice and Quickly learn Python’s necessary skills by solving simple questions and problems.

Topics : Variables, Operators, Loops, String, Numbers, List

Python Input and Output Exercise

Solve input and output operations in Python. Also, we practice file handling.

Topics : print() and input() , File I/O

Python Loop Exercise

This Python loop exercise aims to help developers to practice branching and Looping techniques in Python.

Topics : If-else statements, loop, and while loop.

Python Functions Exercise

Practice how to create a function, nested functions, and use the function arguments effectively in Python by solving different questions.

Topics : Functions arguments, built-in functions.

Python String Exercise

Solve Python String exercise to learn and practice String operations and manipulations.

Python Data Structure Exercise

Practice widely used Python types such as List, Set, Dictionary, and Tuple operations in Python

Python List Exercise

This Python list exercise aims to help Python developers to learn and practice list operations.

Python Dictionary Exercise

This Python dictionary exercise aims to help Python developers to learn and practice dictionary operations.

Python Set Exercise

This exercise aims to help Python developers to learn and practice set operations.

Python Tuple Exercise

This exercise aims to help Python developers to learn and practice tuple operations.

Python Date and Time Exercise

This exercise aims to help Python developers to learn and practice DateTime and timestamp questions and problems.

Topics : Date, time, DateTime, Calendar.

Python OOP Exercise

This Python Object-oriented programming (OOP) exercise aims to help Python developers to learn and practice OOP concepts.

Topics : Object, Classes, Inheritance

Python JSON Exercise

Practice and Learn JSON creation, manipulation, Encoding, Decoding, and parsing using Python

Python NumPy Exercise

Practice NumPy questions such as Array manipulations, numeric ranges, Slicing, indexing, Searching, Sorting, and splitting, and more.

Python Pandas Exercise

Practice Data Analysis using Python Pandas. Practice Data-frame, Data selection, group-by, Series, sorting, searching, and statistics.

Python Matplotlib Exercise

Practice Data visualization using Python Matplotlib. Line plot, Style properties, multi-line plot, scatter plot, bar chart, histogram, Pie chart, Subplot, stack plot.

Random Data Generation Exercise

Practice and Learn the various techniques to generate random data in Python.

Topics : random module, secrets module, UUID module

Python Database Exercise

Practice Python database programming skills by solving the questions step by step.

Use any of the MySQL, PostgreSQL, SQLite to solve the exercise

Exercises for Intermediate developers

The following practice questions are for intermediate Python developers.

If you have not solved the above exercises, please complete them to understand and practice each topic in detail. After that, you can solve the below questions quickly.

Exercise 1: Reverse each word of a string

Expected Output

• Use the split() method to split a string into a list of words.
• Reverse each word from a list
• finally, use the join() function to convert a list into a string

Steps to solve this question :

• Split the given string into a list of words using the split() method
• Use a list comprehension to create a new list by reversing each word from a list.
• Use the join() function to convert the new list into a string
• Display the resultant string

Exercise 2: Read text file into a variable and replace all newlines with space

Given : Assume you have a following text file (sample.txt).

Expected Output :

• First, read a text file.
• Next, use string replace() function to replace all newlines ( \n ) with space ( ' ' ).

Steps to solve this question : -

• First, open the file in a read mode
• Next, read all content from a file using the read() function and assign it to a variable.
• Display final string

Exercise 3: Remove items from a list while iterating

Description :

In this question, You need to remove items from a list while iterating but without creating a different copy of a list.

Remove numbers greater than 50

Expected Output : -

• Get the list's size
• Iterate list using while loop
• Check if the number is greater than 50
• If yes, delete the item using a del keyword
• Reduce the list size

Solution 1: Using while loop

Solution 2: Using for loop and range()

Exercise 4: Reverse Dictionary mapping

Exercise 5: display all duplicate items from a list.

• Use the counter() method of the collection module.
• Create a dictionary that will maintain the count of each item of a list. Next, Fetch all keys whose value is greater than 2

Solution 1 : - Using collections.Counter()

Solution 2 : -

Exercise 6: Filter dictionary to contain keys present in the given list

Exercise 7: print the following number pattern.

Refer to Print patterns in Python to solve this question.

• Use two for loops
• The outer loop is reverse for loop from 5 to 0
• Increment value of x by 1 in each iteration of an outer loop
• The inner loop will iterate from 0 to the value of i of the outer loop
• Print value of x in each iteration of an inner loop
• Print newline at the end of each outer loop

Exercise 8: Create an inner function

Question description : -

• Create an outer function that will accept two strings, x and y . ( x= 'Emma' and y = 'Kelly' .
• Create an inner function inside an outer function that will concatenate x and y.
• At last, an outer function will join the word 'developer' to it.

Exercise 9: Modify the element of a nested list inside the following list

Change the element 35 to 3500

Exercise 10: Access the nested key increment from the following dictionary

Under Exercises: -

Python Object-Oriented Programming (OOP) Exercise: Classes and Objects Exercises

Updated on:  December 8, 2021 | 51 Comments

Python Date and Time Exercise with Solutions

Updated on:  December 8, 2021 | 11 Comments

Python Dictionary Exercise with Solutions

Updated on:  May 6, 2023 | 57 Comments

Python Tuple Exercise with Solutions

Updated on:  December 8, 2021 | 95 Comments

Python Set Exercise with Solutions

Updated on:  October 20, 2022 | 27 Comments

Python if else, for loop, and range() Exercises with Solutions

Updated on:  September 6, 2021 | 294 Comments

Updated on:  August 2, 2022 | 153 Comments

Updated on:  September 6, 2021 | 108 Comments

Python List Exercise with Solutions

Updated on:  December 8, 2021 | 197 Comments

Updated on:  December 8, 2021 | 7 Comments

Python Data Structure Exercise for Beginners

Updated on:  December 8, 2021 | 116 Comments

Python String Exercise with Solutions

Updated on:  October 6, 2021 | 221 Comments

Updated on:  March 9, 2021 | 23 Comments

Updated on:  March 9, 2021 | 51 Comments

Updated on:  July 20, 2021 | 29 Comments

Python Basic Exercise for Beginners

Updated on:  August 31, 2023 | 492 Comments

Useful Python Tips and Tricks Every Programmer Should Know

Updated on:  May 17, 2021 | 23 Comments

Python random Data generation Exercise

Updated on:  December 8, 2021 | 13 Comments

Python Database Programming Exercise

Updated on:  March 9, 2021 | 17 Comments

• Online Python Code Editor

Updated on:  June 1, 2022 |

About PYnative

PYnative.com is for Python lovers. Here, You can get Tutorials, Exercises, and Quizzes to practice and improve your Python skills .

Explore Python

• Learn Python
• Python Basics
• Python Databases
• Python Exercises
• Python Quizzes
• Python Tricks

To get New Python Tutorials, Exercises, and Quizzes

Legal Stuff

We use cookies to improve your experience. While using PYnative, you agree to have read and accepted our Terms Of Use , Cookie Policy , and Privacy Policy .

Copyright © 2018–2024 pynative.com

How to think like a programmer — lessons in problem solving

by Richard Reis

If you’re interested in programming, you may well have seen this quote before:

“Everyone in this country should learn to program a computer, because it teaches you to think.” — Steve Jobs

You probably also wondered what does it mean, exactly, to think like a programmer? And how do you do it??

Essentially, it’s all about a more effective way for problem solving .

In this post, my goal is to teach you that way.

By the end of it, you’ll know exactly what steps to take to be a better problem-solver.

Why is this important?

Problem solving is the meta-skill.

We all have problems. Big and small. How we deal with them is sometimes, well…pretty random.

Unless you have a system, this is probably how you “solve” problems (which is what I did when I started coding):

• Try a solution.
• If that doesn’t work, try another one.
• If that doesn’t work, repeat step 2 until you luck out.

Look, sometimes you luck out. But that is the worst way to solve problems! And it’s a huge, huge waste of time.

The best way involves a) having a framework and b) practicing it.

“Almost all employers prioritize problem-solving skills first.

Problem-solving skills are almost unanimously the most important qualification that employers look for….more than programming languages proficiency, debugging, and system design.

Demonstrating computational thinking or the ability to break down large, complex problems is just as valuable (if not more so) than the baseline technical skills required for a job.” — Hacker Rank ( 2018 Developer Skills Report )

Have a framework

To find the right framework, I followed the advice in Tim Ferriss’ book on learning, “ The 4-Hour Chef ”.

It led me to interview two really impressive people: C. Jordan Ball (ranked 1st or 2nd out of 65,000+ users on Coderbyte ), and V. Anton Spraul (author of the book “ Think Like a Programmer: An Introduction to Creative Problem Solving ”).

I asked them the same questions, and guess what? Their answers were pretty similar!

Soon, you too will know them.

Sidenote: this doesn’t mean they did everything the same way. Everyone is different. You’ll be different. But if you start with principles we all agree are good, you’ll get a lot further a lot quicker.

“The biggest mistake I see new programmers make is focusing on learning syntax instead of learning how to solve problems.” — V. Anton Spraul

So, what should you do when you encounter a new problem?

Here are the steps:

1. Understand

Know exactly what is being asked. Most hard problems are hard because you don’t understand them (hence why this is the first step).

How to know when you understand a problem? When you can explain it in plain English.

Do you remember being stuck on a problem, you start explaining it, and you instantly see holes in the logic you didn’t see before?

Most programmers know this feeling.

This is why you should write down your problem, doodle a diagram, or tell someone else about it (or thing… some people use a rubber duck ).

“If you can’t explain something in simple terms, you don’t understand it.” — Richard Feynman

Don’t dive right into solving without a plan (and somehow hope you can muddle your way through). Plan your solution!

Nothing can help you if you can’t write down the exact steps.

In programming, this means don’t start hacking straight away. Give your brain time to analyze the problem and process the information.

To get a good plan, answer this question:

“Given input X, what are the steps necessary to return output Y?”

Sidenote: Programmers have a great tool to help them with this… Comments!

Pay attention. This is the most important step of all.

Do not try to solve one big problem. You will cry.

Instead, break it into sub-problems. These sub-problems are much easier to solve.

Then, solve each sub-problem one by one. Begin with the simplest. Simplest means you know the answer (or are closer to that answer).

After that, simplest means this sub-problem being solved doesn’t depend on others being solved.

Once you solved every sub-problem, connect the dots.

Connecting all your “sub-solutions” will give you the solution to the original problem. Congratulations!

This technique is a cornerstone of problem-solving. Remember it (read this step again, if you must).

“If I could teach every beginning programmer one problem-solving skill, it would be the ‘reduce the problem technique.’

For example, suppose you’re a new programmer and you’re asked to write a program that reads ten numbers and figures out which number is the third highest. For a brand-new programmer, that can be a tough assignment, even though it only requires basic programming syntax.

If you’re stuck, you should reduce the problem to something simpler. Instead of the third-highest number, what about finding the highest overall? Still too tough? What about finding the largest of just three numbers? Or the larger of two?

Reduce the problem to the point where you know how to solve it and write the solution. Then expand the problem slightly and rewrite the solution to match, and keep going until you are back where you started.” — V. Anton Spraul

By now, you’re probably sitting there thinking “Hey Richard... That’s cool and all, but what if I’m stuck and can’t even solve a sub-problem??”

First off, take a deep breath. Second, that’s fair.

Don’t worry though, friend. This happens to everyone!

The difference is the best programmers/problem-solvers are more curious about bugs/errors than irritated.

In fact, here are three things to try when facing a whammy:

• Debug: Go step by step through your solution trying to find where you went wrong. Programmers call this debugging (in fact, this is all a debugger does).

“The art of debugging is figuring out what you really told your program to do rather than what you thought you told it to do.”” — Andrew Singer

• Reassess: Take a step back. Look at the problem from another perspective. Is there anything that can be abstracted to a more general approach?

“Sometimes we get so lost in the details of a problem that we overlook general principles that would solve the problem at a more general level. […]

The classic example of this, of course, is the summation of a long list of consecutive integers, 1 + 2 + 3 + … + n, which a very young Gauss quickly recognized was simply n(n+1)/2, thus avoiding the effort of having to do the addition.” — C. Jordan Ball

Sidenote: Another way of reassessing is starting anew. Delete everything and begin again with fresh eyes. I’m serious. You’ll be dumbfounded at how effective this is.

• Research: Ahh, good ol’ Google. You read that right. No matter what problem you have, someone has probably solved it. Find that person/ solution. In fact, do this even if you solved the problem! (You can learn a lot from other people’s solutions).

Caveat: Don’t look for a solution to the big problem. Only look for solutions to sub-problems. Why? Because unless you struggle (even a little bit), you won’t learn anything. If you don’t learn anything, you wasted your time.

Don’t expect to be great after just one week. If you want to be a good problem-solver, solve a lot of problems!

Practice. Practice. Practice. It’ll only be a matter of time before you recognize that “this problem could easily be solved with <insert concept here>.”

How to practice? There are options out the wazoo!

Chess puzzles, math problems, Sudoku, Go, Monopoly, video-games, cryptokitties, bla… bla… bla….

In fact, a common pattern amongst successful people is their habit of practicing “micro problem-solving.” For example, Peter Thiel plays chess, and Elon Musk plays video-games.

“Byron Reeves said ‘If you want to see what business leadership may look like in three to five years, look at what’s happening in online games.’

Fast-forward to today. Elon [Musk], Reid [Hoffman], Mark Zuckerberg and many others say that games have been foundational to their success in building their companies.” — Mary Meeker ( 2017 internet trends report )

Does this mean you should just play video-games? Not at all.

But what are video-games all about? That’s right, problem-solving!

So, what you should do is find an outlet to practice. Something that allows you to solve many micro-problems (ideally, something you enjoy).

For example, I enjoy coding challenges. Every day, I try to solve at least one challenge (usually on Coderbyte ).

Like I said, all problems share similar patterns.

That’s all folks!

Now, you know better what it means to “think like a programmer.”

You also know that problem-solving is an incredible skill to cultivate (the meta-skill).

As if that wasn’t enough, notice how you also know what to do to practice your problem-solving skills!

Phew… Pretty cool right?

Finally, I wish you encounter many problems.

You read that right. At least now you know how to solve them! (also, you’ll learn that with every solution, you improve).

“Just when you think you’ve successfully navigated one obstacle, another emerges. But that’s what keeps life interesting.[…]

Life is a process of breaking through these impediments — a series of fortified lines that we must break through.

Each time, you’ll learn something.

Each time, you’ll develop strength, wisdom, and perspective.

Each time, a little more of the competition falls away. Until all that is left is you: the best version of you.” — Ryan Holiday ( The Obstacle is the Way )

Now, go solve some problems!

And best of luck ?

Special thanks to C. Jordan Ball and V. Anton Spraul . All the good advice here came from them.

Thanks for reading! If you enjoyed it, test how many times can you hit in 5 seconds. It’s great cardio for your fingers AND will help other people see the story.

If this article was helpful, share it .

Learn to code for free. freeCodeCamp's open source curriculum has helped more than 40,000 people get jobs as developers. Get started

Play coding games . Have fun. Build skills.

Play   in   25+   languages

Get   (even)   better   at   coding

Have   a   blast,   all   100%   free!

Move   up   the   (career)   ladder

Our   mission:   help   people   get   hired   for   their   skills

Hiring developers.

The CodinGame community site was developed to make improving your coding skills fun and accessible to everyone. We know you can be an excellent coder, with or without an engineering degree.

Our mother company, CoderPad , offers technical hiring solutions so people can recruit the person with the strongest skills, not just the most impressive resume.

Let the skills say it all!

Have   fun   coding   today.

How to Solve Coding Problems: Step-by-Step Guide (2024)

May 20, 2024 · 13 min read

Coding challenges are a common obstacle for many programmers, whether they are just starting or have years of experience.

In this complete guide, we will provide expert tips and strategies for effectively solving coding problems.

By following these valuable tips, you can confidently enhance your problem-solving skills and conquer even the most challenging coding tasks.

Let's get started.

Read the Problem Statement Carefully

Identify key constraints

One imperative step in solving coding problems is identifying the key constraints in the problem statement. These constraints define the boundaries within which your solution must operate and can greatly influence your approach.

Note important variables

Carefully note down important variables mentioned in the problem statement as they often hold crucial information for solving the problem efficiently.

Understanding the significance of these variables can guide you toward the right solution approach.

Remember to consider any implicit variables that might affect your solution but are not explicitly mentioned in the problem statement.

Attention to all variables will ensure a more comprehensive understanding of the problem.

Tip:  Here, you can learn about key  programming definitions and terms

Create your next presentation

snappify will help you to create stunning presentations and videos.

This video was created using snappify 🤩

Break Down Complexity

Divide into smaller Tasks

You'll find that breaking down a complex coding problem into smaller tasks makes it more manageable.

Start by identifying the different components of the problem and breaking them down into smaller subproblems. This approach will help you tackle each subproblem individually and eventually solve the larger problem.

Focus on one task

The key to successfully breaking down a complex coding problem is to focus on one task at a time.

Concentrating all your efforts on solving one specific subproblem can help you avoid feeling overwhelmed by the complexity of the overall task.

This focused approach will improve your problem-solving skills and allow you to make steady progress toward the final solution.

When focusing on one task, setting clear goals and objectives for that specific subproblem is vital. It will help you stay on track and prevent distractions derailing your problem-solving process.

By dedicating your full attention and energy to each task, you can efficiently work through the complexities of the coding problem and find an effective solution.

Tip:  The  Feynman learning technique  is the best solution for learning how to break down complex concepts.

Research and Learn

Study similar problems

Research shows that one of the best strategies to solve coding problems easily is to study similar problems.

By analyzing how others have approached and solved comparable issues, you can gain valuable insights and techniques to apply to your challenges.

Learn new concepts

Learning new concepts is imperative for continuous improvement in coding.

By staying updated with the latest technologies, algorithms, and best practices, you can enhance your problem-solving skills and broaden your understanding of different coding techniques.

Any aspiring coder should regularly explore new concepts through online courses, tutorials, and coding challenges.

This proactive approach helps solve current problems more effectively and prepares you for future challenges in the ever-evolving tech industry.

Tip:  The fastest way to learn any new concept is to share what you learn. For example, you can learn a piece of code and then use  code sharing tools  to share your knowledge with the audience.

Write Pseudocode First

Plan out Algorithm Steps

For effective problem-solving, it is crucial to plan out the steps of your algorithm before writing actual code.

Pseudocode helps break down the problem into smaller, manageable steps, making it easier to implement the solution in the chosen programming language.

Visualize solution flow

While writing pseudocode, visualize how the solution will flow from one step to another.

This visualization helps in understanding the logic of the algorithm and can highlight any potential issues or optimizations that can be made before writing actual code.

For instance, if you are working on a sorting algorithm, visualizing the flow can help you determine the most efficient way to arrange the elements and identify any redundant steps that you can eliminate to improve performance.

Start with Simple

Implement basic solution

Unlike complex problems, coding problems are best tackled with a straightforward approach.

Begin by implementing a basic solution that may not be the most efficient but solves the problem correctly.

This helps in understanding the problem better and getting a working solution.

Refine as needed

Implementing a basic solution is just the beginning.

As you progress, refine your code by optimizing it for performance, readability, and scalability.

Refactoring code to improve efficiency and incorporating best practices will boost your solution to the next level.

A key strategy for refining your code is to analyze its complexity and identify areas for optimization. This may involve revisiting your algorithm choices and data structures or breaking down the problem into smaller, manageable parts.

By continuously refining your solution, you improve your coding skills and enhance the quality of your code.

Use Online Resources

Leverage coding communities

Despite the various challenges of coding problems, the process becomes easier when you tap into the wealth of knowledge available in coding communities.

These online platforms, such as Stack Overflow and GitHub, offer a supportive environment where you can seek solutions, ask questions, and learn from experienced programmers.

Consult online tutorials

These resources provide step-by-step guidance on various programming concepts and problem-solving techniques, making grasping complex algorithms and data structures easier.

The abundance of online tutorials ranges from beginner to advanced, and they are fit for programmers of all proficiency levels.

By consulting these tutorials, you can enhance your understanding of coding principles and develop effective strategies for solving various coding problems.

Any aspiring coder should take advantage of the vast array of online resources that can facilitate the process of solving coding problems.

By leveraging coding communities, consulting online tutorials, and exploring other online platforms, you can quickly sharpen your problem-solving skills and become a more proficient programmer.

Tip:  Resources like YouTube and Udemy are great ways. But you can also read the  best development books  to enhance your coding skills further.

Debug Thoroughly

Identify common mistakes

Unlike overlooking small errors, identifying common mistakes is crucial in debugging code efficiently.

Any coder should be aware of recurring issues like:

• Syntax Errors
• Logical mistakes
• Incorrect variable usage

By recognizing these patterns, programmers can initiate debugging and write cleaner code.

Test edge cases

Any comprehensive debugging strategy should include testing edge cases to ensure code reliability and robustness.

By intentionally pushing the boundaries of input values or conditions, developers can uncover potential mistakes that might go unnoticed during regular testing.

This practice helps programmers anticipate and address unexpected scenarios, leading to more resilient code.

Testing edge cases involves evaluating the extremes of input data or conditions to verify the code's behavior under challenging circumstances.

By examining how the program handles unusual or extreme values, developers can identify vulnerabilities or inefficiencies that may occur in real-world usage.

Practice Regularly

Build problem-solving muscle

Your coding skills are like a muscle that needs regular exercise to strengthen. Make a habit of solving coding problems daily to enhance your problem-solving abilities.

Develop coding instincts

Build a strong intuition for coding by practicing regularly.

As you solve more problems, you'll notice patterns and common strategies that can help you tackle new problems more efficiently.

Developing coding instincts involves understanding different approaches to problem-solving and knowing when to apply them. This initiative will guide you in choosing the most effective solutions and optimizing your code for better performance.

Review and Refine

Analyze solution efficiency

Unlike simply finding a solution, it is imperative to analyze its efficiency.

Evaluate the time complexity, space complexity, and overall performance of the code.

This step will help you understand how the code will perform with larger inputs and whether there are any bottlenecks that need to be addressed.

Optimize code quality

Coding problems are not just about finding a solution but also about writing clean and efficient code.

Pay attention to coding standards, readability, and best practices.

Refactor the code to make it more concise, understandable, and maintainable. This step is crucial in ensuring that your code is not only functional but also of high quality.

You can use tools like linters and code formatters to check and improve your code's quality automatically.

These tools can help you catch potential errors, enforce coding standards, and enhance the overall readability of your codebase.

By optimizing your code quality, you can make it easier for yourself and others to understand and work with the code in the future.

Tip:  You can use a  code review checklist  to optimize code efficiency quickly.

Learn from Others

Study open-source code

Study open-source code to truly enhance your coding skills.

By studying the work of experienced developers, you can gain insight into different perspectives, problem-solving techniques, and coding styles.

This exposure can broaden your knowledge and inspire innovative solutions to coding problems.

Learn from mentors

Some of the most effective learning experiences come from mentors who can provide guidance, feedback, and real-world insights.

Connecting with experienced professionals in the field can offer valuable advice, help you navigate challenges, and accelerate your learning process.

Learn from mentors who have expertise in your specific area of interest.

Their guidance can help you grasp complex concepts, avoid common pitfalls, and stay updated on industry trends.

Building a strong mentorship relationship can significantly impact your coding journey and foster professional growth.

Stay Calm and Patient

Manage problem-solving stress

After encountering a challenging coding problem, managing the stress that comes with it is imperative.

Take deep breaths, step back, and remind yourself that feeling stuck is okay.

Keeping a clear mind will help you approach the problem more effectively.

Take breaks when needed

If you find yourself hitting a wall and getting frustrated, it's time to take a break.

Stepping away from the problem for a few minutes or even an hour can improve your mental clarity.

Some fresh air or a quick walk can help reset your mind and improve focus when you return to the task.

When stress builds up, it can blur your thinking and make problem-solving even more challenging.

Taking breaks gives you a chance to relax and allows your brain to subconsciously work on the problem in the background, often leading to new insights and solutions.

Identify Patterns

Recognize common patterns

One vital skill in solving coding problems is recognizing common patterns.

By identifying recurring themes or structures in the problem you're trying to solve, you can apply similar solutions that have worked in the past. It can help simplify your problem-solving process and lead to more efficient coding.

Apply pattern-based solutions

To effectively apply pattern-based solutions, you need to understand different types of patterns commonly found in coding problems.

These patterns can include algorithms like sliding windows, two-pointers, or depth-first search.

By leveraging these patterns, you can quickly develop solutions that have been proven to work for similar problems.

Tip:  You can explore different  development frameworks  to identify common patterns.

Draw Diagrams

Visualize problem structure

When faced with a complex coding problem, start by visualizing its structure.

Use diagrams to represent different components, their relationships, and data flow. This visual representation can clarify the problem and help you identify key areas to focus on.

Illustrate solution flow

While solving coding problems, illustrating the solution flow through diagrams can facilitate the problem-solving process.

Create a step-by-step flowchart or sequence diagram to map the logic and algorithm.

This visual aid can guide you through the implementation phase and help you identify potential errors or optimizations in the solution.

Diagrams can also serve as documentation for your code, making it easier for others to understand your thought process and approach.

By incorporating visual elements into your problem-solving strategies, you can enhance your efficiency and accuracy in coding.

Collaborate with Peers

Work with coding partners

For an effective problem-solving strategy, consider working with coding partners.

Collaborating with peers can help you bounce ideas off each other, share different approaches, and collectively develop innovative solutions.

By leveraging your peers diverse skills and perspectives, you can tackle coding problems more efficiently and effectively.

Learn from peer feedback

Even the most experienced coders can benefit from constructive feedback from their peers.

Peer feedback can provide valuable insights into alternative solutions, code optimization techniques, and potential pitfalls to avoid.

You can continuously improve your problem-solving skills and expand your coding knowledge by actively seeking and incorporating feedback from your coding peers.

Work with your coding partners to brainstorm ideas, discuss different approaches, and troubleshoot any challenges you encounter.

Creating a collaborative environment with your peers can enhance your problem-solving abilities and accelerate your learning process.

Final Words

Mastering the key skills mentioned above will help you solve coding problems more easily and efficiently.

Buffing your problem-solving skills, staying organized, and utilizing various techniques such as pseudocoding and debugging can help you tackle coding challenges with confidence and precision.

Keep practicing and implementing these strategies to enhance your problem-solving abilities and become a more skilled coder.

Why is code optimization important in the problem-solving process?

Code optimization is important in the problem-solving process because it improves the code's performance and efficiency. Optimized code runs faster, requires less memory, and performs better with large input sizes. Optimization reduces the code's time and space complexity and ensures that it meets performance requirements.

Why is testing your code with different test cases important in coding problem-solving?

Testing your code with different test cases helps ensure your solution works correctly for various scenarios. It also helps identify edge cases, errors, and potential bugs in the code. Thorough testing enhances the reliability and accuracy of your code.

Share Article

• Interview Problems on DP
• Practice DP
• Tutorial on Dynamic Programming
• Optimal Substructure
• Overlapping Subproblem
• Memoization
• Tabulation vs Memoization
• 0/1 Knapsack
• Unbounded Knapsack
• Coin Change
• Egg Dropping Puzzle
• Matrix Chain Multiplication
• Palindrome Partitioning
• DP on Arrays
• DP with Bitmasking
• DP on Trees
• DP on Graph

Top 50 Dynamic Programming Coding Problems for Interviews

Here is the collection of the Top 50 list of frequently asked interview questions on Dynamic Programming. Problems in this Article are divided into three Levels so that readers can practice according to the difficulty level step by step.

Level 1: Dynamic Programming Coding Problems for Interviews

Level 2: Dynamic Programming Coding Problems for Interviews

Level 3: Dynamic Programming Coding Problems for Interviews

Related Articles:

• Top 50 Array Coding Problems for Interviews
• Top 50 String Coding Problems for Interviews
• Top 50 Tree Coding Problems for Interviews
• Top 50 Graph Coding Problems for Interviews
• Top 50 Sorting Coding Problems for Interviews
• Top 50 Searching Coding Problems for Interviews
• Top 50 Binary Search Tree Coding Problems for Interviews

Please Login to comment...

Similar reads.

• Dynamic Programming

Improve your Coding Skills with Practice

What kind of Experience do you want to share?

C++ Solved programs, problems/Examples with solutions

C++ solved programs, problems with solutions.

C++ Solved programs —->  C++ is a powerful general-purpose programming language. It is fast, portable and available in all platforms.

This page contains the C++ solved programs/examples with solutions, here we are providing most important programs on each topic . These C examples cover a wide range of programming areas in Computer Science.

Every example program includes the description of the program, C++ code as well as output of the program. All examples are compiled and tested on a Windows system.

These examples can be as simple and basic as “Hello World” program to extremely tough and advanced C++ programs. Here is the List of C++ solved programs/examples with solutions (category wise) and detailed explanation.

C++ Solved Programs by categories…….

C++ basic solved programs.

• C++ Program to Print Number (Entered by the User)
• C++ Program to Addition of Two Numbers
• C++ Program to Find Quotient and Remainder
• C++ Program to Swap Two Numbers Without Using third variable
• C++ Program to Find Size of int, float, double and char
• C++ Program to Multiply two Numbers
• C++ Program to Find ASCII Value of a Character
• C++ program to generate random numbers
• C++ Program to calculate sum and average of three numbers
• C++ Program to convert inches into yard, feet and inches
• C++ Program to raise any number X to power N
• C++ Program to Add Two Numbers
• C++ Program to Convert Days Into Years, Weeks and Days
• C++ Program to find Square Root of a number
• C++ Program to find Compound Interest
• C++ program to find cube of number using macros
• C++ Program to Check Number is Odd or Even
• C++ Program to Check Character is Uppercase, Lowercase, Digit or Special Character
• C++ Program to Check whether year is Leap year or not
• C++ Program to Find All Roots of a Quadratic Equation
• C++ Program to Check Whether a character is Vowel or Consonant
• C++ Program to Check given number is Even or Odd
• C++ Program to Check given number is Prime number or not
• C++ Program to find Factorial of a Number
• C++ program to Print Table of any Number
• C++ Program to Reverse a Number
• C++ Program to Find number of Digits in any number
• C++ Program to find Fibonacci Series
• C++ Program to Check given number is Armstrong or Not
• C++ program to Find Largest Number among three numbers
• C++ program to Check Number is Palindrome or not
• C++ Program to Find HCF of two numbers
• C++ program to find LCM of two numbers
• C++ program to find Square Root of a Number
• C++ Program to find Cube Root of Number
• C++ program to find sum of digits of a number
• C++ Program to Find Power of Number
• C++ Program to find average of numbers
• C++ Program for Pascal Triangle

C++ Number Solved Programs

• C++ Program to Check Number is Unique Number or Not
• C++ Program to Find Sum of First n Natural Numbers
• C++ Program to Find Divisors of a Number
• C++ Program to Find Sum of Square of n Natural Numbers
• C++ Program to Convert Binary to Decimal
• C++ Program to Convert Decimal to Binary
• C++ Program to Display Prime Numbers Between Two Intervals
• C++ Program to Convert Binary Number to Octal
• C++ Program to Convert Octal to Binary
• C++ Program to Convert Octal Number to Decimal
• C++ Program to Convert Decimal Number to Octal
• C++ Program to Make a Simple Calculator
• C++ program to find area of circle
• C++ Program to find Area and Perimeter of Rectangle
• C++ Program to find Perfect Number
• C++ Program to Calculate Grade of Student
• C++ Program to Calculate Arithmetic Mean
• C++ Program to Calculate Average Percentage Marks

C++ String Solved Programs

• C++ Program to Print entered String
• C++ Program to Find Frequency of Characters in String
• C++ program to Find Length of String
• C++ Program to Compare Two Strings
• C++ Program to Reverse String
• C++ program to concatenate two string
• C++ Program to Copy String into Another String
• C++ Program to Find Number of Vowels, Consonants, Digits, Spaces in String
• C++ Program to Remove Characters in String Except Alphabets
• C++ Program to Sort Elements in Lexicographical Order
• C++ Program to Swap Two Strings
• C++ Program to Convert Lowercase to Uppercase
• C++ Program to Convert Uppercase Character to Lowercase
• C++ Program to Convert Uppercase String to Lowercase
• C++ Program to Remove Spaces from String
• C++ Program to Count Words in String
• C++ Program to Delete Words from String
• C++ Program to Delete Vowels from String
• C++ Program to Find Substring in String
• C++ Program for Permutation of String
• C++ Program to reverse all strings stored in an array
• C++ Program to Convert first alphabet from lowercase to uppercase
• C++ Program to check whether String is Palindrome or not
• C++ Program to convert first letter of each word to uppercase and other to lowercase

C++ Arrays Solved Programs

• C++ Program to find Maximum or Largest number in array
• C++ Program to enter 5 numbers & display first and last only
• C++ Program To reverse an array elements entered by user
• C++ Program to Sort an Array Elements in Ascending Order
• C++ Program to Sort an Array Elements in Descending Order
• C++ Program for Addition of two matrix
• C++ Program to Find Duplicate Elements in Array
• C++ Program to Find Sum of Elements of an Array
• C++ Program to Reverse elements of an Array
• C++ Program to Find Even & Odd Elements in Array
• C++ Program to Delete element from Array
• C++ program to Insert element at specific position in array
• C++ Program to Pass Array in Function
• C++ Program for Three Dimensional (3D) Array
• C++ Program for Two Dimensional Array
• C++ Program to Delete Element from Array
• C++ Program to Find Smallest Element in Array
• C++ Program to Find Largest Element in Array
• C++Program for One Dimensional (1-D) Array
• C++ Program to Calculate Average of elements in an Arrays
• C++ Program to Access Elements of an Array Using Pointer
• C++ Program to Multiply Two Matrix Using Multi-dimensional Arrays
• C++ Program to Find Transpose of a Matrix
• C++ Program to Subtract Two Matrices
• C++ Program for Quick Sort using arrays
• C++ Program for Shell Sort using Arrays
• C++ Program for Union of Two Sorted Arrays
• C++ Program for Union of Two Unsorted Arrays
• C++ Program for Insertion Sort using Array
• C++ Program for Selection Sort using Arrays
• C++ Program to Find Largest and Smallest Element of a Matrix
• C++ Program for Binary Search in Arrays
• C++ Program for Linear Search in Arrays
• C++ Program to Find Sum of Diagonals of Matrix
• C++ Program to Print Lowerhalf and Upperhalf of Triangle Matrix
• C++ Program to Find Sum Above and Below of Main Diagonal Matrix
• C++ Menu Driven Program for Queue Operations using Arrays
• C++ Menu Driven Program for Stack Operations Using Arrays
• C++ Program to implement Merge Sort using Divide and Conquer Algorithm

C++ Functions Solved Programs

• C++ Program for Linear search using recursion
• C++ Program to Find Factorial of Number Using Recursion
• C++ program to Find Sum of Natural Numbers using Recursion
• C++ program to Check Number can Express as Sum of Prime Numbers
• C++ Program to Check Prime Number
• C++ Program to Find GCD Using Recursion
• C++ Program to Find Power Using Recursion
• C++ program to Reverse String Using Recursion
• C++Program to Convert Octal to Binary
• C++ Program to Convert Binary Number to Decimal
• C++ Program to convert decimal number to binary
• C++ Program for Fibonacci Series Using Recursion
• C++ program to swap values using pass by reference
• C++ Program to print series using function: x + x^3/3! + x^5/5! +…….+ x^n/n!
• C++ Program for Addition,subtraction and multiplication using function
• C++ Program to find cube of number using function
• C++ program to find greatest between two numbers using inline function
• C++ program to find factorial by defining functions outside the class
• C++ program to find greatest b/w 3 nos. by defining the functions inside class
• C++ program to swap two characters and integers by call by value
• C++ program to find reverse of number by defining functions outside class
• C++ program to swap 2 characaters and integers by call by address
• C++ program to find sum and product of 5 numbers using inline function
• C++ program to add two time by Call by reference
• C++ program to add two time by Call by address
• C++ program to find how many times function called by objects
• C++ program to find square of float and integer using inline function
• C++ program to add two complex number passing objects as arguments
• C++ program to find factorial of number using functions
• C++ program to check number is palindrome or not using Function
• C++ Program to Swap two numbers using call by value
• C++ Program to Swap two numbers by call by address
• C++ Program to Swap two numbers by call by reference

C++ Classes and Objects Solved Programs

• C++ Program to display entered Date
• C++ program to display Student details using class
• C++ Program to find Largest among 3 numbers using classes
• C++ Program to find Sum of odd numbers between 1 and 100 using class
• C++ program to display Entered Time using class
• C++ program to find Largest among 2 numbers using class
• C++ program to Swap two numbers using class
• C++ program for various Mathematical Operations using Switch case
• C++ Program to Compare Two Strings using overloading
• C++ Program to enter student marks and roll no. using Virtual Class
• C++ Program to Print Numbers From 1 to n using class
• C++ Program to calculate Volume of Cube using constructor and destructor
• C++ Program to Perform Complex Operations using Overloading
• C++ Program to determine the Area of Rectangle using constructors
• C++ Program to show Constructor & Destructor Example
• C++ Program to Show Counter using Constructors
• C++ Program to Display Date using Constructors
• C++ program to Display Student Details using constructor and destructor
• C++ Program to enter student details by Passing parameters to constructors
• C++ Program to Show Overload Constructor Example
• C++ Program to show Example of Default copy constructor
• C++ Program to demonstrate Constructor Overloading
• C++ Program To calculate Volume of Box using Constructor
• C++ Program To Calculate Simple Interest using class
• C++ Program To Calculate Electricity Bill Of Person using Class
• C++ program to multiply every member by 10 using class
• C++ program for Simple Queue using Class
• C++ Program to implement B- Trees using Linked Lists

C++ Constructor and Destructor Solved Programs

• C++ Program to Show an Example of Destructor
• C++ Program to Show an Example demonstrating Order of constructor invocation
• C++ Program For Constructor with Two Parameters
• C++ Program to illustrates the use of Constructors in single inheritance
• C++ Program to illustrates the use of Constructors in multilevel inheritance

C++ Inheritance Solved Programs

• C++ Program to access protected data member using Inheritance
• C++ Program for Inheritance Beyond Single Level
• C++ Program for enter Patient details using Inheritance
• C++ program to demonstrate an example of Single Inheritance
• C++ Program to demonstrate an Example of Multiple Inheritance
• C++ Program to demonstrate an Example of Hybrid Inheritance
• C++ program display student marksheet using multiple inheritance
• C++ Program to find Area of Rectangle using inheritance
• C++ Program to show access to private,public and protected using Inheritance
• C++ Program to Overriding the member functions using Inheritance
• C++ Program to enter Student details of different Stream using Hierarchical Inheritance
• C++ Program to find area and volume using multiple inheritance
• C++ Program to demonstrate an Example of Multilevel Inheritance
• C++ Program to illustrates the use of Constructors in multiple inheritance
• C++ Program of templated class derived from non-templated class
• C++ Program of non-templated class derived from templated base class
• C++ Program of templated class derived from another templated class

C++ Overloading Solved Programs

• C++ program to Swap variables using function overloading
• C++ program for show Counter using Overloading unary operator ++
• C++ program to perform operations on complex numbers
• C++ class Program to perform rational number arithmetic
• C++ class Program to perform Complex Arithmetic using operator overloading
• C++ Program to Find the Area of shapes using function overloading
• C++ Program to check Palindrome using function overloading
• C++ program to find area of square,rectangle,circle and triangle
• C++ program to find volume of cube, cylinder, sphere by function overloading

C++ Polymorphism Solved Programs

• C++ Program to demonstrate Run time polymorphism
• C++ Program to illustrate the use of pure virtual function in Polymorphism
• C++ Program to define an Abstract Class in Polymorphism
• C++ Program to illustrates the use of Virtual base class
• C++ Program to show an Example of Pointers to base class
• C++ Program to illustrate Abstract Base Class
• C++ Program to illustrate an example of Pure Virtual functions
• C++ Program to maintain employee database using virtual class

C++ File Handling Solved Programs

• C++ Program to Maintain Book Record using File Handling
• C++ Program to Maintain House Records using File Handling
• C++ Program for Registration(Signup) process using File Handling
• C++ Program to Read and Write File Operation in File Handling
• C++ Menu Driven Program to perform Add,Modify,Append and Display
• C++ Program to Store or Enter Data to file using File Handling
• C++ Program to Retrieve information from the file using File Handling
• C++ Program to Read and Display file using File Handling
• C++ Program to Merge Two Files to Third File using File Handling
• C++ Program to Encrypt Files using File Handling
• C++ Program to Decrypt Files using File Handling
• C++ program to read and write values through object using File Handling
• C++ Program to Count Digits, Alphabates & Spaces using File Handling
• C++ Program to Count Words, Lines and Total Size using File Handling
• C++ Program to read text file and write in another text file in File Handling
• C++ Program to Count Occurrence of Word using File Handling
• C++ Program to Read Write Student Details using File Handling
• C++ Program of Manipulation of file pointers in File Handling

C++ Template Solved Programs

• C++ Program to find Largest among two numbers using function template
• C++ Program to Swap data using function template
• C++ Program to build Simple calculator using Class template
• C++ Program to demonstrate an Example of Template specialization
• C++ Program to demonstrate an Example of Non-type parameters for templates
• C++ Program to implement Generic methods on Stack using Class Template
• C++ Program to implement push & pop methods from stack using template
• C++ Program to Add two numbers using function template
• C++ program to find Sum of numbers using Overload template function
• C++ Program to Perform Simple Addition Function Using Templates
• C++ Program to find sum of Array using function template
• C++ Program to find Square function of each data-type using single template
• C++ Program of square function using template specialization
• C++ Program to show Example of Static member variable of template class
• C++ Menu Driven Program for Stack using Templates
• C++ program to implement Hash Table using Template Class

If you found any error or any queries related to the above programs or any questions or reviews , you wanna to ask from us ,you may Contact Us through our contact Page or you can also comment below in the comment section.We will try our best to reach up to you in short interval.

Thanks for reading the post….

No related posts.

You are tasked by Skontiri Delivery Company, to develop a system to calculate the delivery cost for their clients. Clients are charged per pounds in weight based on the delivery area code. A Provincial delivery code is 1, a National delivery code is 2 and an International delivery code is 3. The fee for the delivery is as follows: For each delivery, enter the delivery number (use as sentinel), weight and specify if the delivery is insured or not. Before you calculate the Price confirm if a valid area code is entered. Price is calculated per pounds based on the …  Read more »

Hi please i am help me soultion plz

#include <iostream> #include <string> double calculatePrice(int areaCode, double weight) {     double feePerPound;     switch (areaCode) {         case 1:             feePerPound = 1.5;             break;         case 2:             feePerPound = 2.5;             break;         case 3:             feePerPound = 4.0;             break;         default:             std::cout << “Invalid area code” << std::endl;             return 0.0;     }     return feePerPound * weight; } double calculateTax(double price) {     const double taxRate = 0.1;     return price * taxRate; } double calculateInsurance(double price, bool insured) {     const double insuranceRate = 0.05;     if (insured) {         return price * insuranceRate;     }     return 0.0; } int main() {     std::string areaName;     int deliveryNumber, areaCode;     double weight, price, tax, insurance, total, grandTotal = 0.0; …  Read more »

cout <<“Machine is working: “<< machineisworking;

#include <iostream> #include <string> #include<math.h> using namespace std; int main() {   int price=10,total,tax=1.088,weight,area_code,deliveryno;   cout<<“\n DELIVERY CALCULATOR:”;   cout<<“\n enter the delivery number”;   cin>>deliveryno;   cout<<“\n enter the weight of the package”;   cin>>weight;   cout<<“\n Enter the area code from below:\n Provincial delivery code is 1\n a National delivery code is 2\n and an International delivery code is 3.\n”;   cin>>area_code;   switch(area_code)   {     case 1:      total=weight*price*tax*1;      break;      case 2:      total=weight*price*tax*2;      break;      case 3:      total=weight*price*tax*3;      break;          }   cout<<“\n the delivery fee is:”<<total;  return 0; }

# include < iostream > //#include <string> //#include<math.h> using namespace std ; int main () {   int price = 10 ;   int tax = 2 ;   int total , weight , area_code , deliveryno ;   cout << “ DELIVERY CALCULATOR: “;   cout << “ enter the delivery number “ <<endl ;   cin >> deliveryno ;   cout << “ enter the weight of the package “ <<endl ;   cin >> weight ;   cout << “ Enter the area code from below: Provincial delivery code is 1 a National delivery code is 2 and an International delivery code is 3. “ <<endl ;   cin >> area_code ;   switch ( area_code )   {     case 1 :       total = weight * price * tax * deliveryno ;       break ;       case 2 :       total = weight * price * tax * deliveryno ;       break ;       case 3 :       total = weight * price * tax * deliveryno ;       break ;         }   cout << “ the delivery fee is: “ << total ;   return 0 ; }

Write a program that prompts the user to enter two integers.

The program outputs how many numbers are multiples of 3 and how many numbers are multiples of 5 between the two integers (inclusive)

#include using namespace std; int main() { int a,b,i,count1=0,count2=0;

cout< first integer): “<>a>>b;

for(i=a;i<=b;i++){ if(i%3==0){ ++count1; } }

for(i=a;i<=b;i++){ if(i%5==0){ ++count2; } }

cout<<"No. of multiples of 3: "<<count1<<endl; cout<<"No. of multiples of 5: "<<count2;

These programs are wonderful! But, the most important thing is missing is the comments! I am not saying that there should be comment for every line of code but where ever it need so. I am sure without comments, it’s not useful for students nor for anyone novice to programming! That’s why this site has less viewers. Still, it is something that can be revised anytime.

marks in maths >= 70 marks in physics >= 65 marks in chemistry >= 60 Total marks in all three subjects >= 180

Make a function bool Is_Digit (char n) which returns true,..if the character is between character 0 to 9 else, it returns false using inline function. plz help

Write a program that creates and then reads a matrix of 4 rows and 4 columns of type int. while reading; the program should not accept values greater than 100. For any entered value greater than 100, the program should ask for input repeatedly. After reading all numbers, the system should find the largest number in the matrix and its location or index values. The program should print the largest number and its location (row and column).

write a programme which stores different tax record of a company

There is a garage where the access road can accommodate any number of trucks at one time. The garage is build such a way that only the last truck entered can be moved out. Each of the trucks is identified by a positive integer (a truck_id). Write a program to handle truck moves, allowing for the following commands: a) On_road (truck_id) b) Enter_garage (truck_ id) c) Exit_garage (truck_id) d) Show_trucks (garage ) e) Show_trucks(road) f) user menu for function calling

Good day everyone, please i would like to know how to write a nested if program following a step by step process; payment of fees admission letter online registration identification card an allocated hall of residence Please i will need all the help i can get, i am a computer science student and i am having little problems with this… please can i get the information sent to my provided gmail account. THANK YOU SO MUCH FOR YOUR FURTHER ASSISTANCE IT NEEDS TO BE SUBMITTED IN LESS THAN 12 HOURS ALL THE HELP I WILL GET WOULD BE NEEDED,

You are given a sequence a1, a2, …, aN . Find the smallest possible value of ai + aj , where 1 ≤ i < j ≤ N . Input The first line of each description consists of a single integer N . The second line of each description contains N space separated integers – a1, a2, …, aN respectively. Output A single line containing a single integer (the smallest possible sum). Sample Input1: Sample Input2: 4 5 1 3 4 10 9 2 7 4 5 6 3 8 1 10 Sample Output2: Sample Output2: 4 3

Write a C++ program to calculate the tuition fee for a student at a University. The program should prompt for and accept the idnumber and the total number of credits for which he/she has enrolled. The bill outputted should contain the idnumber and tuition fee. Calculate the tuition fee as follows: • Total credits of 15 or more indicates that the student is full-time. Full-time students pay a flat rate of $35,000 for tuition. • Total credits of less than 15 indicate that the student is part-time. Part-time students pay $850 per credit for tuition. After printing the tuition fee, …  Read more »

#include<iostream> using namespace std; class Student{ public: string regNo; int noOfcredits; double tBill; string status1 = “Full-time”; string status2 = “Part-time”; string answer; }; isBool(string answer){ if(answer == “yes”){ return true; }else if(answer == “no”){ return false; } } int main() { Student stud1,stud2; stud1.regNo; cout << “Enter registration number: ” ; getline(cin, stud1.regNo); stud1.noOfcredits; cout << “Enter number of credits: ” ; cin >> stud1.noOfcredits; isBool(stud1.answer); stud1.tBill; if(stud1.noOfcredits > 15){ cout << “Status: “<< stud1.status1 ; cout << “\nTution fee: $35,000 “; cout << “\nCalculate tution fee for another student? “; cin >> stud1.answer; }else{ cout << “Status: “<< stud1.status2 …  Read more »

Write a program to display only months, but with a forward/backward button to move bw the months from January to December

Welcome   A recently launched attraction at the “Events Square” entertainment fair is the “Carnival of Terror” which is an interactive fun zone featuring scary, horror and Halloween stories.   The Entry tickets for the show is to be printed with a Welcome message along with an additional message for Children stating they should be accompanied by an adult. Given the age of the person visiting the scary house, the ticket should carry the additional message only for Children whose age is less than 15 years. The show organizers wanted your help to accomplish this task. Write a program that …  Read more »

#include<iostream>

using namespace std; class Child{ public: string name; int age; };

int main() { Child child1; cout << “Enter child’s first name: “; cin >> child1.name; cout << “Enter age: “; cin >> child1.age; if(child1.age > 15){ cout << child1.name << ” welcome to Carnival of Terror..”<< endl; }else{ cout << child1.name << ” welcome to Carnival of Terror..”<< endl; cout << “Please note that you should be accompanied by an adult..”<< endl; } return 0; }

galat program hai

. include new functions of -print a single node -print entire list search a node by, name, id, cnic, dob (function overload…one function per filter) insert at head -insert at tail

The management of Lifetime Company Limited decided to pay a bonus of 4.3% of total sales to every salesperson of the company who made total sales of GHS 5000 or more in six (6) months. Write a C++ program to accept the monthly sales of each salesperson and display whether the person deserve a bonus or not.

hello programmer

Find Second Maximum Number(using operators &&, >, <) Write a program which takes 3 input integers and tell the 2nd maximum. Sample Input : 90 5 60 Sample Output

In this program the user has to insert two integer numbers: number1 which must be between 1 and 50 inclusive (i.e. 1<= number1 <=50) and number2 which must be between 51 and 100 inclusive (i.e. 51 <= number2 <= 100). A wrong inserted value for any number causes the output message “Invalid” to be displayed on the console and the program returns. When valid numbers are entred, they are used to in a loop that applies the following equation in each iteration: k = i * i + 2 * j. In this loop, “i” represnts a series of consecutive ascending even numbers starting with …  Read more »

can you provide some more programs of oop for better pratice and for concept clarification ?

This website is very helpful . I’m in love with it .

Supermarket is a retail facility with wide range of products under one roof, including fullgroceries and general merchandise. They satisfy the customers in all their routine shopping needs in one trip. Arun owns a supermarket in Chennai and he wanted to create a software that contains the purchase details of all the customers made on that day and at the end of the day, he wants to calculate the total amount received and the total number of items purchased by all the customers in a database. Help him to do this by writing a C++ program. Strictly adhere to the Object Oriented Specifications …  Read more »

write c++ program to add two integer vectors together and store them in a third vector. the first two vectors should accepts user input for five elements each.

The representation of a complex number as a sum of a real and imaginary number, z = x + i y, is called its Cartesian representation. We can therefore express any complex number z = x + i y into , this representation is known polar representation of any complex number z. where                                                                                                                      and You need to create a class having name, Polar Representation with data members, magnitude and angle. Make sure you provide a default constructor too. Overload following operators of the class; 1.     + operator (to add two objects of class) 2.     – operator (to subtract two objects of class) 3.     * operator (to multiply …  Read more »

please help me

. Write a “Garage” class that has a “Car” that is having troubles with its “Motor”. Use a function-level try block in the “Garage” class constructor to catch an exception (thrown from the “Motor” class) when its “Car” object is initialized. Throw a different exception from the body of the “Garage” constructor s handler and catch it in main( ). 

Write a program that asks the user to enter the number of courses he/she is taking and then enter the course code and its number of credits. The program should sum the total number of credits and display it.

Create publisher class that represents a book publisher, publisher has two properties/attributes name and a code which should be a non-negative integer. Class must have a constructor that should take parameters to set the both properties, get functions for both attributes, a set method to change name. and a print function to print/display the publisher. now create a main function make and object of publisher, print the publisher then change the publisher code and again print the publisher. your program should run like this the old publisher the new publisher

Define a class named ‘Train’ representing following members: Data members :- – Train Number – Train Name – Source – Destination – Journey Date – Capacity Member functions: – Initialise members – Input Train data – Display data Write a C++ program to test the train class.

Develop a geometry calculator that will do the following things: 1. It should give the user many options to choose between (user should right 1 if he/she wants to calculate something related to circle, 2 for rectangle and so on). Like 1. Circle 1. Area 2. Circumference 2. Rectangle 1. area 3. Triangle 1. Area 2. base 4. Parallelogram 1. Area 5. Trapezoid  1. Area

2. Each of these operations must be handled by a function 3. You should use call by value, call by reference with pointers in any of these functions

Your task is to create a program that examines the distribution grades on an exam. Ask the user to input how many students does he have followed by the grades of those students. Then, group the grades depending on the range and then display the summary in a bar graph format. The ranges are as follows: 0 – 9, 10 – 19, 20 – 29, 30 – 39, 40 – 49, 50 – 59, 60 – 69, 70 – 79, 80 – 89, 90 – 99, and 100. 

A company has three types of employee: 1. Managers: receive a fixed monthly salary 2. Commission Workers: receive $1000 plus 5% of their gross monthly sales 3. Piece Workers: receive a fixed amount of money per item for each of the items they produce; each pieceworker in this company works on only one type of item. Write a program to compute the monthly pay for each employee. P.S: You do not know the number of employees in advance. Each type of employee has its own pay code:  Managers have code 1  Commission Workers have code 2  Pieceworkers …  Read more »

write a program 1) Declare all variables and constants paying attention to the types 2) Calculate the area of ​​the circle given the radius 3) Divide the area of ​​the circle by the number of segments, but only if this number is different from zero 4) Print all partial results

Overload the ‘subscript’ operator for the class ‘String’ so that it takes a character as a parameter and returns the position of its first occurrence. The output of the following code should be two. String s1(“abcd”); cout<<s1[‘c’]<<endl; Also, overload ‘+’ operator to merge two strings. Create an menu-driven program. 1. Find 2. Merge 3. Exit

plz help me

Write a program to process the quote Four Score and Seven Years Ago. Copy the quotation into a string. Create three character arrays – one for vowels, one for consonants and one for reverse order. The program will copy the vowels into the vowels array, the consonants into the consonants array and the reverse order quote into the reverse array. For example, if the string were “hello world”: • The vowels array would equal ‘e’, ‘o’, ‘o’ • The consonants array would equal ‘h’, ‘l’, ‘l’, ‘w’, ‘r’, ‘l’, ‘d’ • The reverse array would equal ‘d’, ‘l’, ‘r’, ‘o’, …  Read more »

1) Prompts the user to enter from the keyboard car price and profit percentage. (Both are float). 2) Calculates the total price using car price and profit percentage. For example, if the car price is 100 BD and profit percentage is 25%, then the total price is 125 BD. 3) Display the value of car price, profit percentage, total price. Each in separate line formatted in two decimal places. Sample Input/output (Input in red color)

whats my problem

#include<iostream> using namespace std ; int main() { cout<<“Fahadvai” ; return 0 : }

help problem?

Write a program to display your name 500 times

Write a program to accept any number and check whether the number is even or odd

Using switch case statement accept any two numbers and display sum, product or difference according to the user’s choice. An appropriate message should be displayed for the wrong choice 

Write a program to accept any positive integer and display its square. i.e. if the input is 5 then the output should be 25. Program will exit only if user enters less than or equals to 0 

#include<iostream> using namespace std; int main() { /*Write a program to accept any positive integer and display its square.  i.e. if the input is 5 then the output should be 25.  Program will exit only if user enters less than or equals to 0 */

 int num;  cout<< “Enter any number :”;  cin>>num;  if( num<0)      exit(0);

    else      cout<<num<< ” it’s square is “<<num*num<<endl;

 return 0; }

Write a program to accept any number and display the sum of its factors. * 

The programme below in C++ is given to you. Complete the  Binnary Search function so as to work properly with a head and tail pointer and return whether value x is included in the table or not. Assume that the table already has all its elements in ascending order. // Example program #include #include using namespace std; void filltable(int *p){   for (int i=0; i<5; i++){   cout <> *p;   p++;   } } void printtable(int *pr){   for (int i=0; i<5; i++){   cout << *pr <<"  ";   pr++;   } } void findx(int *p, int x){ …  Read more »

Write a c++ program to perform following operations: Create a class with following Data Members and Member Functions: • Data Members : JavaMarks and CPPMarks • Member Functions: ◦ Constructor() – Create a constructor to initalize the data members ◦ Overload the binary + operator using Friend Function ◦ Display() – Display the data ◦ Call the Destructor at the end of the code

• A string (X).
• A letter (L1) .
• A letter (L2) .

Output: –       The same string (X) , but modified as the following: o  Find some word that start with (L1) , and end with the letter (L2) . o  Copy the founded word to the last of the array but in reverse manner. Example: L1 = ‘S’ L2 = ‘L’

h i s   S S C H O O L L   y e s

c o m e ‘\0’

x[]= we his school yes come loohcs ‘\0’

how can i solve it

write a C++ program to find number of similar words between 5 text files and 1 source file one by one, and common phrases among the these files

i like that you have variety of questions.

hi I want code of that program

s= y/(x+1)! +y/(x+2)! +y/(x+3)! +…. y/(x+n)!

"Hello World!" in C Easy C (Basic) Max Score: 5 Success Rate: 85.71%

Playing with characters easy c (basic) max score: 5 success rate: 84.42%, sum and difference of two numbers easy c (basic) max score: 5 success rate: 94.63%, functions in c easy c (basic) max score: 10 success rate: 96.01%, pointers in c easy c (basic) max score: 10 success rate: 96.59%, conditional statements in c easy c (basic) max score: 10 success rate: 96.95%, for loop in c easy c (basic) max score: 10 success rate: 93.76%, sum of digits of a five digit number easy c (basic) max score: 15 success rate: 98.67%, bitwise operators easy c (basic) max score: 15 success rate: 94.98%, printing pattern using loops medium c (basic) max score: 30 success rate: 95.95%, cookie support is required to access hackerrank.

Seems like cookies are disabled on this browser, please enable them to open this website

Interested in a verified certificate or transfer credit and accreditation ?

Problem to Solve

Ever changed your car’s tires in less than 3 seconds? In Formula One , that’s the usual!

Formula One is a type of elite, international racing. Races take place all over the world, including destinations like Miami, Florida, and Suzuka, Japan. Besides the racer themselves, each team is composed of a “pit crew” of up to 22 people. The pit crew changes tires, fixes the car, and refuels very quickly. Nowadays, an excellent pit stop can take less than 3 seconds.

In a program called pitstop.R , in a folder called pitstop , write a program to analyze pit stop times at Formula One races.

Distribution Code

For this problem, you’ll need to download pitstop.R , along with several CSV files containing pit stop data.

Open RStudio per the linked steps and navigate to the R console:

Next execute

to print your working directory. Ensure your current working directory is where you’d like to download this problem’s distribution code. If using RStudio through cs50.dev the recommended directory is /workspaces/NUMBER where NUMBER is a number unique to your codespace.

If you do not see the right working directory, use setwd to change it!

in order to download a ZIP called pitstop.zip into your codespace.

Then execute

to create a folder called pitstop . You no longer need the ZIP file, so you can execute

followed by Enter to move yourself into (i.e., open) that directory. Your working directory should now end with

If all was successful, you should execute

and see a file named pitstop.R as well as several files ending with .csv . If not, retrace your steps and see if you can determine where you went wrong!

Before jumping in, it will be helpful to get a sense for the “schema” (i.e., organization!) of the data you’re given.

Each CSV file contains pit stop data from one Formula One race. For example, miami.csv contains data from the most recent Miami Grand Prix.

Each row in a CSV file represents one pit stop. In each CSV file, you’ll find the following columns:

• team , which is the team doing the pit stop
• driver , which is the last name of the driver doing the pit stop
• time , which is how long the pit stop took, in seconds
• lap , which is the lap when the pit stop happened

A team usually has 2 drivers in one race, and Formula One races have many laps (i.e., circles around the track).

Specification

In pitstop.R , write a program that prompts the user to enter a CSV file to analyze. Your program should then print the following information:

• The total number of pit stops
• The duration of the shortest pit stop
• The duration of the longest pit stop
• The total time spent on pit stops during the race, across all racers

You may assume the user will not enter an invalid filename. All CSV files will have the same column names.

Assuming pitstop.R is in your working directory, enter the below in the R console to test your program:

How to Test

Here’s how to test your code manually:

• Run your program with source("pitstop.R") . Type miami.csv . Your program should output that there were 28 pit stops, with the shortest being 1.94 seconds and the longest being 11.05 seconds. The total time spent on pit stops was 98.53 seconds.
• Run your program with source("pitstop.R") . Type suzuka.csv . Your program should output that there were 36 pit stops, with the shortest being 2.08 seconds and the longest being 5.43 seconds. The total time spent on pit stops was 105.32 seconds.

You can also check your code using check50 , a program that CS50 will use to test your code when you submit. But be sure to test it yourself as well!

Run the following command in the RStudio console:

Green smilies mean your program has passed a test! Red frownies will indicate your program output something unexpected. Visit the URL that check50 outputs to see the input check50 handed to your program, what output it expected, and what output your program actually gave.

How to Submit

You can submit your code using submit50 .

Keeping in mind the course’s policy on academic honesty , run the following command in the RStudio console:

Acknowledgements

Data retrieved from inmotion.dhl/en/formula-1/fastest-pit-stop-award .

More From Forbes

The most rigorous math program you've never heard of.

• Share to Facebook
• Share to Twitter
• Share to Linkedin

Math-M-Addicts students eagerly dive into complex math problems during class.

In the building of the Speyer Legacy School in New York City, a revolutionary math program is quietly producing some of the city's most gifted young problem solvers and logical thinkers. Founded in 2005 by two former math prodigies, Math-M-Addicts has grown into an elite academy developing the skills and mindset that traditional schooling often lacks.

"We wanted to establish the most advanced math program in New York," explains Ruvim Breydo, co-founder of Math-M-Addicts. "The curriculum focuses not just on mathematical knowledge, but on developing a mastery of problem-solving through a proof-based approach aligned with prestigious competitions like the International Mathematical Olympiad."

From its inception, Math-M-Addicts took an unconventional path. What began as an attempt to attract only the highest caliber high school students soon expanded to offer multiple curriculum levels. "We realized we couldn't find enough kids at the most advanced levels," says Breydo. "So we decided to develop that talent from an earlier age."

The program's approach centers on rigor. At each of the 7 levels, the coursework comprises just a handful of fiendishly difficult proof-based math problems every week. "On average, we expect them to get about 50% of the solutions right," explains instructor Natalia Lukina. "The problems take hours and require grappling with sophisticated mathematical concepts."

But it's about more than just the content. Class sizes are small, with two instructors for every 15-20 students. One instructor leads the session, while the other teacher coordinates the presentation of the homework solutions by students. The teachers also provide customized feedback by meticulously reviewing each student's solutions. "I spend as much time analyzing their thought processes as I do teaching new material," admits instructor Bobby Lee.

Best High-Yield Savings Accounts Of 2024

Best 5% interest savings accounts of 2024.

Lee and the Math-M-Addicts faculty embrace an unconventional pedagogy focused on developing logic, creativity, and a tenacious problem-solving mindset over procedures. "We don't dumb it down for them," says Breydo. "We use technical math language and allow students to struggle through the challenges because that's where real learning happens."

Impressive results of Math-M-addicts students in selective math competitions highlight their ... [+] preparation and dedication.

For the Math-M-Addicts team, finding the right teachers is as essential as shaping brilliant students. Prospective instructors go through a rigorous multi-stage vetting process. "We seek passionate mathematical problem solvers first," says program director Sonali Jasuja. "Teaching experience is great, but first and foremost, we need people who deeply understand and enjoy the reasoning behind mathematics."

Even exceptional instructors undergo extensive training by co-teaching for at least a year alongside veteran Math-M-Addicts faculty before taking the lead role. "Our approach is different from how most US teachers learned mathematics," explains instructor Tanya Gross, the director of Girls Adventures in Math (GAIM) competition. "We immerse them in our unique math culture, which focuses on the 'why' instead of the 'how,' empowering a paradigm shift."

That culture extends to the students as well. In addition to the tools and strategies imparted in class, Math-M-Addicts alumni speak of an unshakable confidence and camaraderie that comes from up to several thousands of hours grappling with mathematics at the highest levels alongside peers facing the same challenges.

As Math-M-Addicts ramps up efforts to expand access through online classes and global partnerships, the founders remain devoted to their core mission. "Math education should not obsess with speed and memorization of math concepts," argues Breydo. "This is not what mathematics is about. To unlock human potential, we must refocus on cognitive reasoning and problem-solving skills. We are seeking to raise young people unafraid to tackle any complex challenge they face"

• Editorial Standards
• Reprints & Permissions

Join The Conversation

One Community. Many Voices. Create a free account to share your thoughts. 

Forbes Community Guidelines

Our community is about connecting people through open and thoughtful conversations. We want our readers to share their views and exchange ideas and facts in a safe space.

In order to do so, please follow the posting rules in our site's  Terms of Service.   We've summarized some of those key rules below. Simply put, keep it civil.

Your post will be rejected if we notice that it seems to contain:

• False or intentionally out-of-context or misleading information
• Insults, profanity, incoherent, obscene or inflammatory language or threats of any kind
• Attacks on the identity of other commenters or the article's author
• Content that otherwise violates our site's  terms.

User accounts will be blocked if we notice or believe that users are engaged in:

• Continuous attempts to re-post comments that have been previously moderated/rejected
• Racist, sexist, homophobic or other discriminatory comments
• Attempts or tactics that put the site security at risk
• Actions that otherwise violate our site's  terms.

So, how can you be a power user?

• Stay on topic and share your insights
• Feel free to be clear and thoughtful to get your point across
• ‘Like’ or ‘Dislike’ to show your point of view.
• Protect your community.
• Use the report tool to alert us when someone breaks the rules.

Thanks for reading our community guidelines. Please read the full list of posting rules found in our site's  Terms of Service.

• Advanced Search

Solving a short sea inventory routing problem in the oil industry

New citation alert added.

This alert has been successfully added and will be sent to:

You will be notified whenever a record that you have chosen has been cited.

To manage your alert preferences, click on the button below.

New Citation Alert!

Please log in to your account

Information & Contributors

Bibliometrics & citations, view options, recommendations, heuristics for a multiperiod inventory routing problem with production decisions.

Manufacturers who resupply a large number of retailers on a periodic basis continually struggle with the question of how to formulate a replenishment strategy. This paper presents a comparative analysis of a series of heuristics for an inventory routing ...

A Matheuristic for the Multivehicle Inventory Routing Problem

We consider the inventory routing problem, in which a supplier has to replenish a set of customers by means of a limited fleet of capacitated vehicles over a discrete time horizon. The goal is to minimize the total cost of the distribution that comprises ...

An Efficient Heuristic Algorithm for a Two-Echelon Joint Inventory and Routing Problem

With an increasing emphasis on coordination in the supply chain, the inventory and distribution decisions, which in most part had been dealt with independently of each other, need to be considered jointly. This research considers a two-echelon ...

Information

Published in.

Pergamon Press, Inc.

United States

Publication History

Author tags.

• Inventory routing
• Multiperiod sea transportation
• Research-article

Contributors

Other metrics, bibliometrics, article metrics.

• 0 Total Citations
• 0 Total Downloads
• Downloads (Last 12 months) 0
• Downloads (Last 6 weeks) 0

View options

Login options.

Check if you have access through your login credentials or your institution to get full access on this article.

Full Access

Share this publication link.

Copying failed.

Share on social media

Affiliations, export citations.

• Please download or close your previous search result export first before starting a new bulk export. Preview is not available. By clicking download, a status dialog will open to start the export process. The process may take a few minutes but once it finishes a file will be downloadable from your browser. You may continue to browse the DL while the export process is in progress. Download
• Download citation
• Copy citation

We are preparing your search results for download ...

We will inform you here when the file is ready.

Your file of search results citations is now ready.

Your search export query has expired. Please try again.