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leetcode-problemset/leetcode-cn/problem (Chinese)/连接词 [concatenated-words].html

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<p>给你一个 <strong>不含重复 </strong>单词的字符串数组 <code>words</code> ,请你找出并返回 <code>words</code> 中的所有 <strong>连接词</strong></p>
<p><strong>连接词</strong> 定义为:一个完全由给定数组中的至少两个较短单词组成的字符串。</p>
<p>&nbsp;</p>
<p><strong>示例 1</strong></p>
<pre>
<strong>输入:</strong>words = ["cat","cats","catsdogcats","dog","dogcatsdog","hippopotamuses","rat","ratcatdogcat"]
<strong>输出:</strong>["catsdogcats","dogcatsdog","ratcatdogcat"]
<strong>解释:</strong>"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。
</pre>
<p><strong>示例 2</strong></p>
<pre>
<strong>输入:</strong>words = ["cat","dog","catdog"]
<strong>输出:</strong>["catdog"]</pre>
<p>&nbsp;</p>
<p><strong>提示:</strong></p>
<ul>
<li><code>1 &lt;= words.length &lt;= 10<sup>4</sup></code></li>
<li><code>0 &lt;= words[i].length &lt;= 1000</code></li>
<li><code>words[i]</code> 仅由小写字母组成</li>
<li><code>0 &lt;= sum(words[i].length) &lt;= 10<sup>5</sup></code></li>
</ul>