连接词
472. 连接词 (Hard)
给定一个 不含重复 单词的字符串数组 words
,编写一个程序,返回 words
中的所有 连接词 。
连接词 的定义为:一个字符串完全是由至少两个给定数组中的单词组成的。
示例 1:
输入:words = ["cat","cats","catsdogcats","dog","dogcatsdog","hippopotamuses","rat","ratcatdogcat"] 输出:["catsdogcats","dogcatsdog","ratcatdogcat"] 解释:"catsdogcats"由"cats", "dog" 和 "cats"组成; "dogcatsdog"由"dog", "cats"和"dog"组成; "ratcatdogcat"由"rat", "cat", "dog"和"cat"组成。
示例 2:
输入:words = ["cat","dog","catdog"] 输出:["catdog"]
提示:
1 <= words.length <= 104
0 <= words[i].length <= 1000
words[i]
仅由小写字母组成0 <= sum(words[i].length) <= 6 * 105
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