Amazon Software Development Engineer Intern interview questions

I sent in my resume to a recruiter and received a reply about a week later. I interviewed about a month later. Interview process involved two phone interviews, back-to-back. Both interviewers were very polite. The first one wasn't too fond of straight up coding as he was with problem solving, so I only had one coding question in total, which was from the second interview. General concepts were asked, such as involving data structures like graphs and trees. Simple questions were asked such as benefits of binary search and how it works. Questions involving OOP were also asked, as well as questions regarding time and space complexity. The whole process took about two months, I heard back about 4 weeks after the interview.