Amazon Software Development Engineer (SDE) interview questions

I received an Online assement. After clearing the online assessment, I got an interview (four rounds) in a single day. Each round started with behavioral questions and then coding. Each interviewer was helpful and cooperative. I had a fun experience with the interviewer. Though I did not crack the interview but the questions were reasonable.

first step was the online assessment and It's was a coding challenge with two scenarios mainly focused around data structures and algorithms up to 90 min, then a describe your approach up to 15 min, then a work style survey up to 15 min