243. Shortest Word Distance
Given a list of words and two words word1 and word2, return the shortest distance between these two words in the list.
Example:
Assume that words = ["practice", "makes", "perfect", "coding", "makes"]
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Note: You may assume that word1 does not equal to word2, and word1 and word2 are both in the list.
解题要点:
记录word1和word2出现的index,两个相减,得出答案。
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