what are the best youtube videos to learn data structure and algorithms, especially for competitive coding, Please suggest me. Covering all topics like a graph,DP,trees, linked list, stack, queue, etc. Any book may be referred to.
As for the book goes, Competitive programmer’s handbook is good. You’ll find it online.
for competitive programming, Code N Code is a good one https://www.youtube.com/channel/UC0zvY3yIBQTrSutsV-4yscQ
If you want to learn concepts of Algos and DS, check out Abdul Bari on youtube.