Amazon Software Development Engineer interview questions

normal software engineer interview. I had two phone interview, typical coding questions, All about basic data structure and algorithms. Then I was invited to an on-site interview in their palo alto office. I met with the hiring manager, three engineers and a guy I thought was a bar raiser. Questions like tree, remove duplicates, word ladder, etc. They were particularly looking for someone who was familiar with Android, but I didn't have any mobile experience.