ByteDance Backend Software Developer I interview questions

First round interview. Online. The interviewer was nice. Questions were not hard but needed a solid understanding of Java. Lasted for around 1 hour. First half was conversational, the second half were coding problems. The interviewer gave hint during the implementation. Also needed to speak out how the code was structured.

3 rounds in a row. Each round they will ask you a medium LC algorithm problem and some networking or databases fundamentals. First algorithm is form a binary tree with pre-order and in-order sequences. Second one is a sliding window. And third one is a tree traversal problem. Not that hard.