Amazon Programer Analyst interview questions

Good. Some interviewers were good except for one. But no punctuality. My interviewer didn't arrive one day and postponed the interview by a month after which he was very rude.

Three rounds of technical interview. In each round 2 or 3 data structures will be asked. Have to write code and explain it. Have to provide optimal solution. for first two rounds gets immediate results weather passed for next round. After third round there won't be any results.