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Given a regular English dictionary, and a word to start with (e.g. "head"), you can only change one letter a time, but every change has to be a word in the dictionary (e.g. head -> heal) What is the quickest way to an end word (e.g. "tail")?
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Senior Member of Technical Staff

Interviewed at Salesforce

4★
Jul 17, 2014

Given a regular English dictionary, and a word to start with (e.g. "head"), you can only change one letter a time, but every change has to be a word in the dictionary (e.g. head -> heal) What is the quickest way to an end word (e.g. "tail")?

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