Amazon Software Development Engineer (SDE) interview questions

Interview was of 1 hr where 2 questions was asked which was simple based on DSA. It started with introduction then Dsa questions.NO others topics were asked. Only one round of interview was conducted and 4 students were selected of total 66 students interviewed after oa round.

Campus placement, online assessment then technical interview round. Technical interview had introductions and then two coding questions in easy to medium range. I could solve only one but couldn't optimize to their liking.