Practice

Programming

Platforms for practicing data structures, algorithms, and real-world problem solving — built for interview prep and pure fun alike.

LeetCode The go-to platform for practicing data structures and algorithms — standard for interview prep.

Kaggle Competitions Real-world ML and data science challenges with community solutions and notebooks.

HackerRank Coding practice across domains — algorithms, math, AI, databases, and more.

Project Euler Challenging math-programming problems that push algorithmic thinking to its limit.

Codecademy Interactive coding lessons for beginners — great for picking up a new language quickly.

Tutorialspoint Quick reference for syntax, code examples, and short tutorials across many languages and tools.