Amazon Softwareentwickler interview questions

A few hackerrank style questions, each with ascending difficulty. The first two are doable, but the last questions are difficult even with prep. Be prepared to study if you want to do well on this technical portion. You have a time limit but can switch between any of the problems at any time.

Took the OA and didn't hear from the recruiter for 2 months then was told I was moving to the loop. My loop was 2 weeks later. First and third rounds were behavioral then technical, second was all behavioral. Ran out of time on the first technical portion and didn't do very well, thought I did pretty well on the second, did well on the technical for the third but badly on the behavioral.