I applied through an employee referral. The process took 4 weeks. I interviewed at Amazon (Seattle, WA) in May 2011
Interview
Applied through employee referral. Got email from HR recruiter. Two phone screens which were fairly easy and then five onsite interviews; hard enough to sweat. Questions were focused on algorithms. Prepare everything: career cup, PIE. Don't really know what they expect.
Phone screen 1:
Basics of data structures like stacks, queues, hash tables.
Code: check whether a given string is palindrome or not.
Follow up: Find all substrings in a string that are palindromic.
Phone screen 2:
concepts of operating systems: deadlock, threads v processes
Code: A number between [0-N] is missing in an array of [0-N-1]. Find the missing number.
Design: Poker game.
Interview questions [5]
Question 1
Given a log file containing (User_Id, URL, Timestamp) user can navigate page from one to the other. Find the three page subset sequence repeated maximum number of times. Records are sorted by Timestamp.
Bar raiser
Given a NumberPool containing number sequence of numbers from 1 to infinity. Implement an interface, essentially two functions-
checkin(N): which adds number to the number pool and makes it available.
checkout(): returns minimum number from the pool and makes it unavailable.
Bar raiser
1. Given array of numbers, find a, b, c such that a + b = c. Can you beat O(N**2) ?
2. Difference between Quick sort and Merge sort. What modifications you make in Quick sort so that it provides O(N lg N) worst case complexity.
Given a set of numbers, partition the set in to two, such that sum of all the candidates in first subset = sum of all the candidate numbers in second subset.
It started with an OA, and then after a few weeks, I got invited to four rounds of interviews: technical and behavioral at 3 of the 4, and behavioral only at one.
Um teste de código online, se aprovado, vai para o loop. O loop é 4 entrevistas seguidas, duas em inglês e duas em português. 3 entrevistas técnicas de código, todas as 4 têm pergunta de liderança.
Interview questions [1]
Question 1
Pergunta historicas baseada nos principios de lideranca da amazon.
The whole process stretched over nearly a month, longer than I anticipated. After an initial phone screen, I faced a technical round that included a Min Stack implementation question. We discussed design considerations and thread safety, which threw me for a bit. Fortunately, I remembered a specific mock interview I practiced on PracHub that mirrored this scenario closely, making me feel more at ease. Ultimately, I received an offer, but I chose to decline due to the company culture not feeling like the right fit.
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