Amazon Software Engineer interview questions

Contacted by an Amazon recruiter asking to fill up a questionnaire. First interview started with the interviewer asking little bit about my back ground. We quickly transitioned into the coding exercise. The problem involved palindromes. I was trying to be verbally descriptive while coding the exercise. I felt a little rushed to code. Second interview got straight to the coding exercise. The problem was around pair identification After the solution there were a few questions around optimization and possible choice of data structures. Better experience with the interviewer this time.