TikTok Software Developer interview questions

Applied for Tiktok NG SDE position. There are 3 Round tech interviews and 1 hm interview. All round combines with BQ + Coding + Resume Questions. Resume was asked a lot.

first 2 rounds pure coding third round resume + system design First round asked to solve a leetcode medium question. solved with optimal approach, pass Second round asked to solve a mutated meeting rooms II, solved but not using optimal approach, didn't communite effectively (maybe), not pass