TikTok Software Development Engineer SDE interview questions

2 rounds of coding, 1 round of system design and one round of behavioral questions. first two with engineer, last two with hiring manager directly. Fairly chill interview environment. The interviewers were friendly and transparent

breif intro on past experince and coding question online via zoom, end with follow up questions and asked questions for interviewer the coding question has 2 parts the problem and a follow up this is the 1/3 part of the vo