This repo is for learning data structure and algorithm. In alg folder, there are PLENTY of classical problems that will help you to learn algorithm, and in DS folder, there are a lof of VERY IMPORTANT data structures. Each classical problem in alg folder would have a problem link(if not, I probably forget it, and I will refine it latter), and ALL problems are either from leetcode or luogu.com.
The part of data structure is still being refined. Also, there are some interseactions between algorithm and data structure (since I am a C lover).