Development Intern Interview Questions

5,462 development intern interview questions shared by candidates

Was confused abit about TREE SYMMETRIC question. He was expecting a recursive solution. But explained him a solution using tree inorder/preorder/postorder traversals. Explained him, and wrote code for different traversals and some functions to integrate all. Finally he seems convincing with my approach and solution.
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Software Development Engineer Intern

Interviewed at Amazon

3.5
Mar 20, 2013

Was confused abit about TREE SYMMETRIC question. He was expecting a recursive solution. But explained him a solution using tree inorder/preorder/postorder traversals. Explained him, and wrote code for different traversals and some functions to integrate all. Finally he seems convincing with my approach and solution.

Most difficult for me was: Write code to - Given a list of numbers, return a list of all possible permutations. eg. given {1,2,3}, return {{},{1},{2},{3},{1,2},...,{1,2,3}} Had to use bit manipulation where I fumbled.
avatar

Software Development Engineer Intern

Interviewed at Amazon

3.5
Feb 14, 2014

Most difficult for me was: Write code to - Given a list of numbers, return a list of all possible permutations. eg. given {1,2,3}, return {{},{1},{2},{3},{1,2},...,{1,2,3}} Had to use bit manipulation where I fumbled.

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