mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
synced 2025-01-10 18:48:13 +08:00
23 lines
1.4 KiB
HTML
23 lines
1.4 KiB
HTML
<p>哦，不！你不小心把一个长篇文章中的空格、标点都删掉了，并且大写也弄成了小写。像句子<code>"I reset the computer. It still didn’t boot!"</code>已经变成了<code>"iresetthecomputeritstilldidntboot"</code>。在处理标点符号和大小写之前，你得先把它断成词语。当然了，你有一本厚厚的词典<code>dictionary</code>，不过，有些词没在词典里。假设文章用<code>sentence</code>表示，设计一个算法，把文章断开，要求未识别的字符最少，返回未识别的字符数。</p>
|
||
|
||
<p><strong>注意：</strong>本题相对原题稍作改动，只需返回未识别的字符数</p>
|
||
|
||
<p> </p>
|
||
|
||
<p><strong>示例：</strong></p>
|
||
|
||
<pre><strong>输入：</strong>
|
||
dictionary = ["looked","just","like","her","brother"]
|
||
sentence = "jesslookedjustliketimherbrother"
|
||
<strong>输出：</strong> 7
|
||
<strong>解释：</strong> 断句后为"<strong>jess</strong> looked just like <strong>tim</strong> her brother"，共7个未识别字符。
|
||
</pre>
|
||
|
||
<p><strong>提示：</strong></p>
|
||
|
||
<ul>
|
||
<li><code>0 <= len(sentence) <= 1000</code></li>
|
||
<li><code>dictionary</code>中总字符数不超过 150000。</li>
|
||
<li>你可以认为<code>dictionary</code>和<code>sentence</code>中只包含小写字母。</li>
|
||
</ul>
|