print the matrix in spiral format (inside out). Not that difficult, but challenging if you have not heard of the question before (as was the case with me)
Intern Engineer Interview Questions
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The best implementation for a binary tree.
X==NULL and NULL==x, what is the difference
Write a function to determine if a tree is a BST.
one question is to find a path in a maze
Find all black regions on image, flood algorithm. OO design a address book.
Nothing too difficult or unexpected
Find the subarray with the largest sum given an unsorted array of positive and negative numbers.
I was asked to give a scalable system design of Amazon.com's order number generation service.
technical questions were pretty easy
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