Amazon Software Development Engineer (SDE I) interview questions

Started with 3 OA rounds(Debugging, simulation and coding) then invited for a final interview which was 3 rounds, 45 min each round and they were all medium level leetcode questions

I got a call from an Amazon recruiter as I was referred by one of my friends for the role. She sent me the coding test link which I had to complete within a week. Once I completed the test, I got a call to schedule the interviews in two weeks. 3 interviews were held on Amazon Chime as per schedule. Post that after 4-5 days, the hr informed me that they would like to proceed with the final bar raiser round, which happened in a couple of days. Following are the questions that were asked: