Amazon Software Development Engineer interview questions

I was contacted by a recruiter and flown to Seattle. After a couple of hours of talking to engineers and asking questions, I spent the rest of the day doing a group programming problem. I can't go into detail about the question, but it was such that every member of the group could work on a seperate part. I thought I did pretty well, but I guess they were looking for something else, or maybe I didn't give the right impression during the 30 minute 1 on 1 interview in which we discussed the code I had written so far and talked about what I wanted to do at Amazon.

I got two 45 minutes phone interviews consecutively. First one is a coding question, and I spent the whole time failing to implement it. Second interviews went with several small algorithm questions, and then a little coding.