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Engineering Project Coordinator Interview Questions

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[On-site] You are given a 10-digit number. List all possible valid words (in the English language) that can be formed when the number is typed on a phone pad (i.e. 1 maps to ABC, 2 to DEF etc.). You have access to a dictionary that provides a isWord() function which returns true if a word is valid. Now assume that instead of the dictionary, you are given a list of valid words. You no longer have access to the isWord() function. How would you modify your algorithm?
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Engineering

Interviewed at Ooyala

3.3★
Apr 17, 2011

[On-site] You are given a 10-digit number. List all possible valid words (in the English language) that can be formed when the number is typed on a phone pad (i.e. 1 maps to ABC, 2 to DEF etc.). You have access to a dictionary that provides a isWord() function which returns true if a word is valid. Now assume that instead of the dictionary, you are given a list of valid words. You no longer have access to the isWord() function. How would you modify your algorithm?

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