The best way to prepare is to go to topcoder and practice a bunch of the questions there. They asked a question about infrastructure. They had me describe my companies infrastructure, and then grilled me on how to adapt it to AWS. Make sure you have at least some knowledge of all of AWS's systems.
Provide two algorithms: one to serialize a binary tree, the other to deserialize it.
I thought the amazon interview bar has gone down drastically. For an SDE 2 position, you expect more than CS 101 questions.
Can't tell the exact questions due to NDA. However, questions were based on data structures, sorting algorithms, object oriented design.
The coding question.
I was told I cannot share this information. I really want to get the position so I don't want to jeopardize anything.
Design Questions and Leadership principles
Can't disclose but 2 LC medium problems.
1. Expression evaluation 2. How would you design a system to sync bookmarks across various devices 3. How would you design a telemetry system that alerts if a transaction takes over X seconds, multiple components involved in between 4. Vendor says he has not received payment for the goods sold, what would you do
Design a Least Recently Used caching system, with syntactically correct code, on a white board
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