find-common-characters.md

<p>Given an array&nbsp;<code>A</code> of strings made only from lowercase letters, return a list of all characters that show up in all strings within the list <strong>(including duplicates)</strong>.&nbsp;&nbsp;For example, if a character occurs 3 times&nbsp;in all strings but not 4 times, you need to include that character three times&nbsp;in the final answer.</p>

<p>You may return the answer in any order.</p>

<p>&nbsp;</p>

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

<pre>
<strong>Input: </strong><span id="example-input-1-1">[&quot;bella&quot;,&quot;label&quot;,&quot;roller&quot;]</span>
<strong>Output: </strong><span id="example-output-1">[&quot;e&quot;,&quot;l&quot;,&quot;l&quot;]</span>
</pre>

<div>
<p><strong>Example 2:</strong></p>

<pre>
<strong>Input: </strong><span id="example-input-2-1">[&quot;cool&quot;,&quot;lock&quot;,&quot;cook&quot;]</span>
<strong>Output: </strong><span id="example-output-2">[&quot;c&quot;,&quot;o&quot;]</span>
</pre>

<p>&nbsp;</p>

<p><strong><span>Note:</span></strong></p>

<ol>
	<li><code>1 &lt;= A.length &lt;= 100</code></li>
	<li><code>1 &lt;= A[i].length &lt;= 100</code></li>
	<li><code>A[i][j]</code> is a lowercase letter</li>
</ol>
</div>
</div>