Amazon Software Development Engineer interview questions

I got a email from a recruiter after I posted my resume on Dice.com. Went through two phone interviews. After the first interview got a date for a second however it got rescheduled due to a scheduling error. Just my bit of advice from the experience so far, be confident of the answers you give even during coding.

1) Received phone call from interviewer. 2) Interviewer inroduced himself with his technical background shortly. 3) Interviewer asked me to introduce my technical experiences. 4) After that, began technical question (about algorithm) - There are ID records of customers who visited yesterday and today. - Extract all customers who visited yesterday and today either. - Estimate time complexity of my algorithm. - Suggest best algorithm to fulfill above task. - Addtional question about hash table. 5) Wrote implementation code on the web site which shared my coding action.