Amazon Software Engineer Internship interview questions

i applied online and got an email for two parts online soon after. got a virtual interview after passing these rounds that were online parts were debugging programming questions and some general puzzle questions in java/c/c++.

The first round was a debugging round which was quite easy. Next, second round is coding challenge with two questions. One was easy to solve and the other was a bit difficult. Overall, good knowledge of data structures helps you to clear these rounds easily