clear-digits

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Algorithms

You are given a string <code>s</code>.

Your task is to remove all digits by doing this operation repeatedly:

<ul>
	<li>Delete the first digit and the closest non-digit character to its left.</li>
</ul>

Return the resulting string after removing all digits.

Note that the operation cannot be performed on a digit that does not have any non-digit character to its left.

&nbsp;
Example 1:

<div class="example-block">
Input: s = &quot;abc&quot;

Output: &quot;abc&quot;

Explanation:

There is no digit in the string.
</div>

Example 2:

<div class="example-block">
Input: s = &quot;cb34&quot;

Output: &quot;&quot;

Explanation:

First, we apply the operation on <code>s[2]</code>, and <code>s</code> becomes <code>&quot;c4&quot;</code>.

Then we apply the operation on <code>s[1]</code>, and <code>s</code> becomes <code>&quot;&quot;</code>.
</div>

&nbsp;
Constraints:

<ul>
	<li><code>1 &lt;= s.length &lt;= 100</code></li>
	<li><code>s</code> consists only of lowercase English letters and digits.</li>
	<li>The input is generated such that it is possible to delete all digits.</li>
</ul>

clearDigits

Clear Digits

Stack

String

Simulation

给你一个字符串&nbsp;<code>s</code>&nbsp;。

你的任务是重复以下操作删除 所有&nbsp;数字字符：

<ul>
	<li>删除 第一个数字字符&nbsp;以及它左边 最近&nbsp;的 非数字&nbsp;字符。</li>
</ul>

请你返回删除所有数字字符以后剩下的字符串。

注意，该操作不能对左侧没有任何非数字字符的数字执行。

示例 1：

<div class="example-block">
输入：s = "abc"

输出："abc"

解释：

字符串中没有数字。
</div>

示例 2：

<div class="example-block">
输入：s = "cb34"

输出：""

解释：

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;。

然后对&nbsp;<code>s[1]</code>&nbsp;执行操作，<code>s</code>&nbsp;变为&nbsp;<code>""</code>&nbsp;。
</div>

&nbsp;

提示：

<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>