Amazon came to campus for hiring Interns. Some 20 people were selected after a written coding round based on BTrees and Linked List. The shortlisted 20 were interviewed, post which 9 people were selected some of whom had to go through another round of interviews.

It was fine but nothing special. Typical questions for an intern applying for an internship program. You wouldn't be surprised. Come with good questions. That always helps. Worst case scenario you don't get it.