Amazon Software Engineer I interview questions

Had a on campus interview and they asked a lot of technical questions. They asked about sorting algorithms as well as about dynamic programming. The interview was very intimating as the interviewer was on his laptop the whole time and didn't speak to me much. They just sat on their laptop and gave me a problem, then kept asking if I was done every 2 minutes.

It was a decent interview.The interviewer was quite friendly. He asked me about my projects and then went into the technical questions.