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40 lines
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40 lines
2.1 KiB
HTML
<p>在英语中，我们有一个叫做 <strong>词根</strong>(root) 的概念，可以词根 <strong>后面 </strong>添加其他一些词组成另一个较长的单词——我们称这个词为 <strong>衍生词</strong> (<strong>derivative</strong>)。例如，词根 <code>help</code>，跟随着 <strong>继承</strong>词 <code>"ful"</code>，可以形成新的单词 <code>"helpful"</code>。</p>
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<p>现在，给定一个由许多 <strong>词根 </strong>组成的词典 <code>dictionary</code> 和一个用空格分隔单词形成的句子 <code>sentence</code>。你需要将句子中的所有 <strong>衍生词 </strong>用 <strong>词根 </strong>替换掉。如果 <strong>衍生词 </strong>有许多可以形成它的 <strong>词根</strong>，则用 <strong>最短 </strong>的 <strong>词根</strong> 替换它。</p>
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<p>你需要输出替换之后的句子。</p>
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<p> </p>
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<p><strong>示例 1：</strong></p>
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<pre>
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<strong>输入：</strong>dictionary = ["cat","bat","rat"], sentence = "the cattle was rattled by the battery"
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<strong>输出：</strong>"the cat was rat by the bat"
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</pre>
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<p><strong>示例 2：</strong></p>
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<pre>
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<strong>输入：</strong>dictionary = ["a","b","c"], sentence = "aadsfasf absbs bbab cadsfafs"
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<strong>输出：</strong>"a a b c"
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</pre>
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<p> </p>
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<p><strong>提示：</strong></p>
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<ul>
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<li><code>1 <= dictionary.length <= 1000</code></li>
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<li><code>1 <= dictionary[i].length <= 100</code></li>
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<li><code>dictionary[i]</code> 仅由小写字母组成。</li>
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<li><code>1 <= sentence.length <= 10<sup>6</sup></code></li>
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<li><code>sentence</code> 仅由小写字母和空格组成。</li>
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<li><code>sentence</code> 中单词的总量在范围 <code>[1, 1000]</code> 内。</li>
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<li><code>sentence</code> 中每个单词的长度在范围 <code>[1, 1000]</code> 内。</li>
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<li><code>sentence</code> 中单词之间由一个空格隔开。</li>
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<li><code>sentence</code> 没有前导或尾随空格。</li>
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</ul>
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<p> </p>
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