reverse-only-letters.md

<p>Given a string <code>S</code>, return the &quot;reversed&quot; string where all characters that are not a letter&nbsp;stay in the same place, and all letters reverse their positions.</p>

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<p><strong>Example 1:</strong></p>

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<strong>Input: </strong><span id="example-input-1-1">&quot;ab-cd&quot;</span>
<strong>Output: </strong><span id="example-output-1">&quot;dc-ba&quot;</span>
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<p><strong>Example 2:</strong></p>

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<strong>Input: </strong><span id="example-input-2-1">&quot;a-bC-dEf-ghIj&quot;</span>
<strong>Output: </strong><span id="example-output-2">&quot;j-Ih-gfE-dCba&quot;</span>
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<p><strong>Example 3:</strong></p>

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<strong>Input: </strong><span id="example-input-3-1">&quot;Test1ng-Leet=code-Q!&quot;</span>
<strong>Output: </strong><span id="example-output-3">&quot;Qedo1ct-eeLg=ntse-T!&quot;</span>
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<p><strong><span>Note:</span></strong></p>

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	<li><code>S.length &lt;= 100</code></li>
	<li><code>33 &lt;= S[i].ASCIIcode &lt;= 122</code>&nbsp;</li>
	<li><code>S</code> doesn&#39;t contain <code>\</code> or <code>&quot;</code></li>
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