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add leetcode problem-cn part2

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2022-03-27 20:38:29 +08:00
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<p>URL化。编写一种方法将字符串中的空格全部替换为<code>%20</code>。假定该字符串尾部有足够的空间存放新增字符,并且知道字符串的“真实”长度。(注:用<code>Java</code>实现的话,请使用字符数组实现,以便直接在数组上操作。)</p>
<p> </p>
<p><strong>示例 1</strong></p>
<pre>
<strong>输入</strong>"Mr John Smith ", 13
<strong>输出</strong>"Mr%20John%20Smith"
</pre>
<p><strong>示例 2</strong></p>
<pre>
<strong>输入</strong>" ", 5
<strong>输出</strong>"%20%20%20%20%20"
</pre>
<p> </p>
<p><strong>提示:</strong></p>
<ul>
<li>字符串长度在 [0, 500000] 范围内。</li>
</ul>