Amazon Senior Software Engineer interview questions

The interviewers are skillful and friendly, mostly testing the coding skills. Leet code grind (medium/hard) will help. One question was on dynamic programming. Manager tested on high level technical design.

There were 3 rounds of interviews. First round was on algorithms and data structures. Next round of design question and this round was on system design. The interviewers were giving hints in terms of guiding along the interview. Making assumptions and explaining each logic