Amazon Software Engineer interview questions

I got email from HR. They got my information one of the resume website. After2 days later the first phone interview, they emailed that they will put me in second round and they ask me to pick the date. after the second round they emailed information abt onsite interview. Most of interview questions are technical and I prepared using internet.

Two consecutive interviews, asked a lot about data structures. Was not hard, but make sure you know time constants and data structure basics.