title: Sorting MM-YYYY string using custom comparer
body: <p>How to perform sorting on the list of mm-yyyy strings along with mixed words using custom comparer with memory-optimized way.</p>
  <pre><code>List&lt;string&gt; result = new List&lt;string&gt;();
  result.Add(&quot;04-2020&quot;);
  result.Add(&quot;03-2021&quot;);
  result.Add(&quot;Nan&quot;);
  </code></pre>