Collection of TypeScript type challenges with online judge

• UpdatedFeb 1, 2026
• TypeScript

A public list of open-source challenges from companies around the world

• UpdatedMay 14, 2024

A public list of open-source challenges from jobs around the world

• UpdatedFeb 4, 2026

1️⃣🐝🏎️ The One Billion Row Challenge -- A fun exploration of how quickly 1B rows from a text file can be aggregated with Java

• UpdatedAug 20, 2024
• Java

Ejercicios de código semanales en 2023 de la comunidad MoureDev para practicar lógica en cualquier lenguaje de programación.

• UpdatedDec 9, 2025
• Python

A collection of JavaScript modern interview code challenges for beginners to experts

• UpdatedOct 25, 2025
• MDX

Popular JavaScript / React / Node / Mongo stack Interview questions and their answers. Many of them, I faced in actual interviews and ultimately got my first full-stack Dev job :)

• UpdatedFeb 29, 2024
• JavaScript

Collection of Vue.js challenges

• UpdatedFeb 10, 2026
• TypeScript

Aqui você encontrará uma coleção de desafios projetados para aprimorar suas habilidades de programação com foco em backend.

• UpdatedJan 5, 2026

SQL data analysis & visualization projects using MySQL, PostgreSQL, SQLite, Tableau, Apache Spark and pySpark.

• UpdatedJul 18, 2022
• Jupyter Notebook

Algorithmic, Data Structures, Frontend and Pentest - Programming challenges and competitions to improve knowledge.

• UpdatedMay 21, 2024

🧩 Kotlin coding puzzle and solutions

• UpdatedFeb 20, 2026
• Kotlin

Retos de programación para mejorar nuestras habilidades

• UpdatedSep 2, 2023

Starter files for the challenges in the Learn JavaScript course

• UpdatedApr 27, 2024
• JavaScript

Open source's challenges of full-stack jobs to test your skills

• UpdatedJun 8, 2024

Uma grande lista de desafios mobile propostos por empresas durante seus processos seletivos para desenvolvedores mobile | A huge list of mobile challenges proposed by companies during their selection processes for mobile developers

• UpdatedFeb 19, 2025

Workshops organized to introduce students to security, AI, blockchain, AR/VR, hardware and software

• UpdatedDec 18, 2025
• Jupyter Notebook

Resolução dos desafios de C Sharp, Java, JavaScript, Kotlin e Ruby da Digital Innovation One.

• UpdatedMar 23, 2022
• C#

This is a project with a collection of coding challenges for those who wants to commit themselves to code at least one hour a day for at least a hundred days.

• UpdatedMay 29, 2024
• C++

Desafios em C#, Java, JavaScript, Kotlin, Python e Ruby dos Bootcamps da Digital Innovation One

• UpdatedOct 10, 2022
• Java