WORD LADDER
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Time: 30 minutes - 1 hour
Difficulty: Hard
Languages: Any
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Given two words and a list of words, implement a function that finds the length of the shortest sequence of transformations from the start word to the end word such that only one letter can be changed at a time, and each transformed word must exist in the given list of words.
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Yes! Voice calls are currently available to users around the world.
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