mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
synced 2025-01-10 18:48:13 +08:00
47 lines
1.9 KiB
HTML
47 lines
1.9 KiB
HTML
<p><strong>句子</strong> 是一个单词列表，列表中的单词之间用单个空格隔开，且不存在前导或尾随空格。每个单词仅由大小写英文字母组成（不含标点符号）。</p>
|
||
|
||
<ul>
|
||
<li>例如，<code>"Hello World"</code>、<code>"HELLO"</code> 和 <code>"hello world hello world"</code> 都是句子。</li>
|
||
</ul>
|
||
|
||
<p>给你一个句子 <code>s</code> 和一个整数 <code>k</code> ，请你将 <code>s</code> <strong>截断</strong> ，使截断后的句子仅含 <strong>前</strong> <code>k</code> 个单词。返回 <strong>截断</strong> <code>s</code><em> </em>后得到的句子<em>。</em></p>
|
||
|
||
<p> </p>
|
||
|
||
<p><strong>示例 1：</strong></p>
|
||
|
||
<pre><strong>输入：</strong>s = "Hello how are you Contestant", k = 4
|
||
<strong>输出：</strong>"Hello how are you"
|
||
<strong>解释：</strong>
|
||
s 中的单词为 ["Hello", "how" "are", "you", "Contestant"]
|
||
前 4 个单词为 ["Hello", "how", "are", "you"]
|
||
因此，应当返回 "Hello how are you"
|
||
</pre>
|
||
|
||
<p><strong>示例 2：</strong></p>
|
||
|
||
<pre><strong>输入：</strong>s = "What is the solution to this problem", k = 4
|
||
<strong>输出：</strong>"What is the solution"
|
||
<strong>解释：</strong>
|
||
s 中的单词为 ["What", "is" "the", "solution", "to", "this", "problem"]
|
||
前 4 个单词为 ["What", "is", "the", "solution"]
|
||
因此，应当返回 "What is the solution"</pre>
|
||
|
||
<p><strong>示例 3：</strong></p>
|
||
|
||
<pre><strong>输入：</strong>s = "chopper is not a tanuki", k = 5
|
||
<strong>输出：</strong>"chopper is not a tanuki"
|
||
</pre>
|
||
|
||
<p> </p>
|
||
|
||
<p><strong>提示：</strong></p>
|
||
|
||
<ul>
|
||
<li><code>1 <= s.length <= 500</code></li>
|
||
<li><code>k</code> 的取值范围是 <code>[1, s 中单词的数目]</code></li>
|
||
<li><code>s</code> 仅由大小写英文字母和空格组成</li>
|
||
<li><code>s</code> 中的单词之间由单个空格隔开</li>
|
||
<li>不存在前导或尾随空格</li>
|
||
</ul>
|