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leetcode-cn/problem (Chinese)/清除数字 [clear-digits].html Normal file
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<p>给你一个字符串&nbsp;<code>s</code>&nbsp;。</p>
<p>你的任务是重复以下操作删除 <strong>所有</strong>&nbsp;数字字符：</p>
<ul>
<li>删除 <strong>第一个数字字符</strong>&nbsp;以及它左边 <strong>最近</strong>&nbsp;的 <strong>非数字</strong>&nbsp;字符。</li>
</ul>
<p>请你返回删除所有数字字符以后剩下的字符串。</p>
<p>&nbsp;</p>
<p><strong class="example">示例 1：</strong></p>
<div class="example-block">
<p><span class="example-io"><b>输入：</b>s = "abc"</span></p>
<p><span class="example-io"><b>输出：</b>"abc"</span></p>
<p><strong>解释：</strong></p>
<p>字符串中没有数字。<!-- notionvc: ff07e34f-b1d6-41fb-9f83-5d0ba3c1ecde --></p>
</div>
<p><strong class="example">示例 2：</strong></p>
<div class="example-block">
<p><span class="example-io"><b>输入：</b>s = "cb34"</span></p>
<p><span class="example-io"><b>输出：</b>""</span></p>
<p><b>解释：</b></p>
<p>一开始，我们对&nbsp;<code>s[2]</code>&nbsp;执行操作，<code>s</code>&nbsp;变为&nbsp;<code>"c4"</code>&nbsp;。</p>
<p>然后对&nbsp;<code>s[1]</code>&nbsp;执行操作，<code>s</code>&nbsp;变为&nbsp;<code>""</code>&nbsp;。</p>
</div>
<p>&nbsp;</p>
<p><strong>提示：</strong></p>
<ul>
<li><code>1 &lt;= s.length &lt;= 100</code></li>
<li><code>s</code>&nbsp;只包含小写英文字母和数字字符。</li>
<li>输入保证所有数字都可以按以上操作被删除。</li>
</ul>