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Software Engineering Intern I Interview Questions

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Find the average value of a binary tree both recursively and iteratively. Explain why iteratively may be preferred over recursively.

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Iteratively should theoretically be more efficient. No function calls, uses less memory, etc.

method 1 ; inorder sort method 2 augmented BST with size as extra data

Graph coding question regarding showing all the possible movies that contain the same themes.

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Give you an array of integers without duplication. Let you write a piece of code to return the pairs that their sum is 100.

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Zig Zag tree traversal, create something similar to your t9 dictionary.

Explain what are binary tree and hash map. The complexity of insert a element into a binary tree and hash map in worst case.

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