Amazon Sr Developer interview questions

I was contacted by a recruiter after posting my resume on monster.com. Consequently, after my profile was shortlisted, I got a call from Amazon HR. She scheduled a F2F interview for me on a Saturday. I was asked to come prepared for at least 4 - 5 rounds of technical interview which could spawn almost half a day. I attended the interview as planned. HR attending me was very cordial. First round was to check my experience with object oriented technology and problem solving skills. It went on for around 1.5 hours. Second round was to check my expertise on usage of data structures and algorithms which went on for 1 hour. Third round was again sort of problem solving which went on for 20 minutes. I think I could do well only in 2nd round, first round and third round didn't go so well. One thing I was surprised to see that people having lesser experience were there to interview me. However, I must point out that the interviewers were polite enough. Candidates, interviewing with Amazon needs to be very well versed in coding and in usage of data structures and algorithms. Be prepared for a lot of problem solving questions. Most of the questions are already there on the internet and they are repeated.

I applied through a friend Recruiter called in to confirm times of phone interviews Two rounds of phone interviews were scheduled The interview loop was terminated after the 2nd interview