reverse-vowels-of-a-string

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Algorithms

Given a string <code>s</code>, reverse only all the vowels in the string and return it.

The vowels are <code>&#39;a&#39;</code>, <code>&#39;e&#39;</code>, <code>&#39;i&#39;</code>, <code>&#39;o&#39;</code>, and <code>&#39;u&#39;</code>, and they can appear in both lower and upper cases, more than once.

&nbsp;
Example 1:

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

Output: &quot;AceCreIm&quot;

Explanation:

The vowels in <code>s</code> are <code>[&#39;I&#39;, &#39;e&#39;, &#39;e&#39;, &#39;A&#39;]</code>. On reversing the vowels, s becomes <code>&quot;AceCreIm&quot;</code>.
</div>

Example 2:

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

Output: &quot;leotcede&quot;
</div>

&nbsp;
Constraints:

<ul>
	<li><code>1 &lt;= s.length &lt;= 3 * 105</code></li>
	<li><code>s</code> consist of printable ASCII characters.</li>
</ul>