Amazon Software Development Engineer 1 interview questions

First round was online coding round and there were 2 questions which were relatively easy. Then there were 2 one-one interview rounds. In the first round, I was asked two questions: one on arrays and the other was on linked lists. In the second round I was asked 1 question of binary trees.

Consists of 4 technical rounds and 1 online assessment round, all rounds consists of medium and hard level coding question. The interviewers were very helpful and provides hints if stuck anywhere, just try to listen them carefully and think over it.