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Description
tab: English
<p>Given a string <code>s</code> consisting of words and spaces, return <em>the length of the <strong>last</strong> word in the string.</em></p>
<p>A <strong>word</strong> is a maximal <span data-keyword="substring-nonempty">substring</span> consisting of non-space characters only.</p>
<p> </p>
<p><strong class="example">Example 1:</strong></p>
<pre>
<strong>Input:</strong> s = "Hello World"
<strong>Output:</strong> 5
<strong>Explanation:</strong> The last word is "World" with length 5.
</pre>
<p><strong class="example">Example 2:</strong></p>
<pre>
<strong>Input:</strong> s = " fly me to the moon "
<strong>Output:</strong> 4
<strong>Explanation:</strong> The last word is "moon" with length 4.
</pre>
<p><strong class="example">Example 3:</strong></p>
<pre>
<strong>Input:</strong> s = "luffy is still joyboy"
<strong>Output:</strong> 6
<strong>Explanation:</strong> The last word is "joyboy" with length 6.
</pre>
<p> </p>
<p><strong>Constraints:</strong></p>
<ul>
<li><code>1 <= s.length <= 10<sup>4</sup></code></li>
<li><code>s</code> consists of only English letters and spaces <code>' '</code>.</li>
<li>There will be at least one word in <code>s</code>.</li>
</ul>
---
[submissions](https://leetcode.com/problems/length-of-last-word/submissions/) | [solutions](https://leetcode.com/problems/length-of-last-word/solutions/)
tab: 中文
<p>给你一个字符串 <code>s</code>，由若干单词组成，单词前后用一些空格字符隔开。返回字符串中 <strong>最后一个</strong> 单词的长度。</p>
<p><strong>单词</strong> 是指仅由字母组成、不包含任何空格字符的最大<span data-keyword="substring-nonempty">子字符串</span>。</p>
<p> </p>
<p><strong>示例 1：</strong></p>
<pre>
<strong>输入：</strong>s = "Hello World"
<strong>输出：</strong>5
<strong>解释：</strong>最后一个单词是“World”，长度为 5。
</pre>
<p><strong>示例 2：</strong></p>
<pre>
<strong>输入：</strong>s = " fly me to the moon "
<strong>输出：</strong>4<strong>
解释：</strong>最后一个单词是“moon”，长度为 4。
</pre>
<p><strong>示例 3：</strong></p>
<pre>
<strong>输入：</strong>s = "luffy is still joyboy"
<strong>输出：</strong>6
<strong>解释：</strong>最后一个单词是长度为 6 的“joyboy”。
</pre>
<p> </p>
<p><strong>提示：</strong></p>
<ul>
<li><code>1 <= s.length <= 10<sup>4</sup></code></li>
<li><code>s</code> 仅有英文字母和空格 <code>' '</code> 组成</li>
<li><code>s</code> 中至少存在一个单词</li>
</ul>
---
[提交记录](https://leetcode.cn/problems/length-of-last-word/submissions/) | [题解](https://leetcode.cn/problems/length-of-last-word/solution/)
Solutions & Notes
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