Domanda di colloquio di TikTok

Leetcode medium to hard, questions on binary search, stack (e.g. valid parenthesis string with wildcard), linked lists (e.g. LRU cache, merge K sorted), graphs (e.g. count islands) and DP (e.g. decode ways). Lots of grinding needed to be familiar with the algorithms as you have to answer 2-3 questions in each round so you have to be fast.