Amazon Software Development Engineer Intern interview questions

Submit resume online and get contact thru email couple months later. Scheduled a back-to-back phone interview (45 mins each, total 90 mins). However, the interview is cancel due to conflict and scheduled another one which is one weeks later. Both interviewers asked question regarding my past experience and coding problems. They do want you to write code and explain to them line by line. However, the 2 interviewers ask approximately the same question. Both "find duplicate item from string" type question. The interview is too easy for company like amazon. So I guess that's why many people in my cs department who can't actually finish MPs get offer. One thing annoys me is that, when I get an offer, I went to spring break and the deadline is one week later. However, I get an email two days before deadline said that all SDE position is fulled in Seattle. And I can only choose to go to other place or be a SDET. Seriously? They are giving more offers than their positions? So finally I choose an external development center in california AWS team with a raised salary.