Amazon Software Developer Engineer Internship interview questions

First stage - online coding challenge, second stage - online interview + coding tasks, third stage - on-site interview. All sorts of question, but most related to algorithms and data structures.

Many of us from my college who applied were invited to the local office to take an assessment. There were three parts to the assessment: a set of brain teaser puzzle problems, a behavioral survey, and a technical section with 2 programming problems. Each section had a specified amount of time given to complete it. After this, I was contacted to go to the next round, which was a phone interview. The phone interview consisted of speaking with an Amazon SDE and coding via a shared text editor.