Amazon Software Development Engineer interview questions

It was an on campus drive. Firstly there was an online assessment round. Out of 60 students 20 were shortlisted for the interviews including me. There were 3 interview rounds 2 were technical and one was an HR round.

2 online assessments, then an interview where they asked behavioral and technical questions. Behavioral questions seemed to be looking for whether or not you act according to Amazon's leadership principles, so read those. Technical question had to do with traversing a tree using depth-first search.