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Given a list of words, group the words that contain the same letters (like dog and god and NOT good). How wold you serialize a general binary tree of characters into a string? Write the serializing side the take in the root node of a general tree. Write the deserializing side to take in a string return a root node of the general tree.
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Software Engineer(Internship)

Interviewed at Uber

3.7★
Oct 6, 2017

Given a list of words, group the words that contain the same letters (like dog and god and NOT good). How wold you serialize a general binary tree of characters into a string? Write the serializing side the take in the root node of a general tree. Write the deserializing side to take in a string return a root node of the general tree.

Given a 2D array of letters, return whether a given word can be found in the grid. To make a word, you can use any adjacent character next to the character you're currently on in the word. But you cannot use the same grid index twice i.e. in a 2x2 array, you could find a 4 letter word by visiting each letter once
avatar

Software Engineer(Internship)

Interviewed at Meta

3.6★
Nov 3, 2018

Given a 2D array of letters, return whether a given word can be found in the grid. To make a word, you can use any adjacent character next to the character you're currently on in the word. But you cannot use the same grid index twice i.e. in a 2x2 array, you could find a 4 letter word by visiting each letter once

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