1
0
mirror of https://gitee.com/coder-xiaomo/leetcode-problemset synced 2025-09-04 23:11:41 +08:00
Code Issues Projects Releases Wiki Activity GitHub Gitee
Files
leetcode-problemset/算法题(国内版)/problem (Chinese)/前缀和后缀搜索 [prefix-and-suffix-search].html

36 lines
1.3 KiB
HTML
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

<p>设计一个包含一些单词的特殊词典,并能够通过前缀和后缀来检索单词。</p>
<p>实现 <code>WordFilter</code> 类:</p>
<ul>
<li><code>WordFilter(string[] words)</code> 使用词典中的单词 <code>words</code> 初始化对象。</li>
<li><code>f(string prefix, string suffix)</code> 返回词典中具有前缀 <code>prefix</code> 和后缀<code>suffix</code> 的单词的下标。如果存在不止一个满足要求的下标,返回其中 <strong>最大的下标</strong> 。如果不存在这样的单词,返回 <code>-1</code></li>
</ul>
<p> </p>
<p><strong>示例</strong></p>
<pre>
<strong>输入:</strong>
["WordFilter", "f"]
[[["apple"]], ["a", "e"]]
<strong>输出:</strong>
[null, 0]
<strong>解释:</strong>
WordFilter wordFilter = new WordFilter(["apple"]);
wordFilter.f("a", "e"); // 返回 0 ,因为下标为 0 的单词的 prefix = "a" 且 suffix = 'e" 。
</pre>
 
<p><strong>提示:</strong></p>
<ul>
<li><code>1 <= words.length <= 15000</code></li>
<li><code>1 <= words[i].length <= 10</code></li>
<li><code>1 <= prefix.length, suffix.length <= 10</code></li>
<li><code>words[i]</code><code>prefix</code><code>suffix</code> 仅由小写英文字母组成</li>
<li>最多对函数 <code>f</code> 进行 <code>15000</code> 次调用</li>
</ul>