Amazon Non Software Development Engineer interview questions

Interview included 2 phone interviews filled with Data structures and coding questions. Mostly about trees and Also have to write a code online.

Initially Amazon came for recruitment through campus placement. It then conducted a online skill test for shortlisting students for 1:1 personal interview rounds. I had 4 personal 1:1 interview within 4 hrs. In interview I was asked to implement basic tree algorithms. Stress was given on how correct algorithm is.