🎓 Data structures and algorithms

• UpdatedJun 21, 2024
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A modern open-source online judge and contest platform system.

• UpdatedDec 14, 2025
• Python

🚀 100+ mini-projects demonstrating the power of concise code. Perfect for learning, portfolio building, and first-time open source contributors. Under 100 lines each!

• UpdatedDec 16, 2025
• Jupyter Notebook

• UpdatedApr 1, 2023
• C++

Solutions of Hackerrank challenges in various languages - Scala, Java, Javascript, Ruby, ...

• UpdatedJun 28, 2019
• Java

Community solutions for the Ninety-Nine Swift Problems (http://enekoalonso.com/projects/99-swift-problems)

• UpdatedJan 25, 2021
• Swift

A learning by doing challenge, where you build an app within 24 hours ⭐️

• UpdatedNov 8, 2018

An interactive version of a classic puzzle

• UpdatedAug 22, 2017
• PureScript

Interesting algorithms I find on the Internet

• UpdatedMay 31, 2020
• Java

All task from list of Programming Challenges v1.4

• UpdatedOct 24, 2022
• C#

Simple program to get A LOT OF invites tohttps://foobar.withgoogle.com/

• UpdatedJun 12, 2019
• Python

Collection of short programs, data structures, algorithms and competitive programs implemented in C programming language.

• UpdatedMar 31, 2017
• C

Hackerearth Solution CPP

• UpdatedMay 8, 2020
• C++

Aprendizado, dicas e projetos sobre Python

• UpdatedAug 16, 2020
• Jupyter Notebook

Algorithm demos

• UpdatedMay 23, 2017
• JavaScript

Lots of algorithm's & their implementations that have been compiled from a variety of locations.

• UpdatedAug 20, 2017
• Java

A programming game, in which your goal is to help a group of dwarves establish a small outpost in the middle of a dangerous forest.

• UpdatedAug 24, 2021
• C++

C Programming Example forhttps://developerinsider.co/c-and-cpp-insider/

• UpdatedSep 1, 2023
• C

AI Programing Competition Game Server

• UpdatedFeb 28, 2018
• Elixir

Recursive Credit Card Searcher For Windows C++ and Linux

• UpdatedOct 26, 2021
• C++