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English Version

题目描述

给定字典中的两个词,长度相等。写一个方法,把一个词转换成另一个词, 但是一次只能改变一个字符。每一步得到的新词都必须能在字典中找到。

编写一个程序,返回一个可能的转换序列。如有多个可能的转换序列,你可以返回任何一个。

示例 1:

输入:
beginWord = "hit",
endWord = "cog",
wordList = ["hot","dot","dog","lot","log","cog"]

输出:
["hit","hot","dot","lot","log","cog"]

示例 2:

输入:
beginWord = "hit"
endWord = "cog"
wordList = ["hot","dot","dog","lot","log"]

输出: []

解释: endWord "cog" 不在字典中,所以不存在符合要求的转换序列。

解法

Python3

Java

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