Amazon Software Development Engineer interview questions

The interviewer was supposed to be for 45 mins, ended in 30 mins itself. Interviewer was patient but did not give much hints. Was hard to judge if he was satisfied by the answers..

Summer SDE intern position. Totally three phone interviews. It seems that you get the third one if you can pass the first two. Questions are not difficult but you should be very careful when solving easy questions. Think about boundary conditions and error handling in your codes. I was a little bit surprised that I did not get an offer. I thought I performed OK at last interview but I received rejection mail two days later.