Amazon came to campus of my university. They conducted 1 interview of 45 minutes as first screening. Those who got selected were invited for 2nd round having 3 interviews.
Interview questions [1]
Question 1
Nothing was difficult. All were general questions based on Hashtable, Sorting, OOPS concept. 1) Given list of elements find if it contains duplicates.
2) Explain inheritance.
3) What is difference between int & Integer.
4) Given file containing IP addresses hitting amazon servers, find ip address with maximum traffic.
5) How Hashtables work?
6) Some behavior questions.
I applied through college or university. The process took 3 days. I interviewed at Amazon (Seattle, WA) in Feb 2014
Interview
The interviewers first describe themselves and then ask you some basic questions. There are 4 rounds. Each 45 minutes. Usually you are asked 2 questions each round. The interviewers are nice and patient. The questions are not very hard. But I made some mistakes in the interview and not get hired.
Interview questions [1]
Question 1
String reversal. Merge LinkedList. OOD. Find duplicates. Prime numbers. Tree serialization.