codewars is an elite platform for honing programming skills through gamified language-agnostic coding challenges called katas that promotes collaborative learning with peer-reviewed solutions and detailed discussions while offering ranked progression to empowers developers from novices to experts in mastering data structure and algorithms concepts.

hackerearth is a challenge oriented content based platform that empowers individuals in mastering competitive programming through a wide range of coding problems and their solutions along with detailed explanations in multiple programming languages making it an essential tool for learning practicing and excelling in real-world technical assessments

leetcode is a dedicated resource-oriented content based platform that empowers individuals in the mastering of hard coding interviews through meticulously crafted collections of leetcode problems and their solutions along with detailed explanations in all the programming languages making it an invaluable tool for both learning and testing purposes.

codeforces is a competitive programming platform featuring language agnostic coding contests virtual competitions and problem sets to sharpen algorithmic skills. It fosters collaborative learning through peer discussions editorials and ranked progressions empowering developers from beginners to experts to master problem solving and data structures.