Amazon Software Development Engineer (SDE I) interview questions

It was for internship, 1 hour interview. There were behavioral questions and 1 programming question involving sorting. The behavioral questions were based on the Amazon principles. There is a blog on medium where you can read how to answer those.

round 0: coding round, 3 simple questions regarding linked list, tree, and array round 1 & 2: Data structure and algorithm round. round 3: it looked like design round but this was also data structure round. prepare data structures especially linked list graph and tree