Amazon Software Engineer interview questions

I submitted the RESUME online from Amazon's website and got a call from the HR after two weeks. A phone interview was scheduled in the following and I talked with the interviewer for an hour about technical question. The whole process was smooth but it didn't lead to an offer.

Posted resume on a "paid membership" jobs site. I have approx 5 yrs of experience. Got call from amazon recruiter. Said it was for Amazon wireless. Scheduled phone interview. I didn't understand why they liked my resume. I was not a Java programmer, but i had a computer science degree. Was totally clueless about what to prepare. Glassdoor.com helped a LOT! 90% of they questions matched what I saw on glassdoor. My first phone interview was more OOP questions so I think i did well as I use them daily and was in touch with the topic. The second was more Data structures, I did not do well, as I did not have enough time to prepare in depth. Be prepared for CS basics like difference between low level and high level languages, hash tables, binary search