title: String join element's order
body: <p>I was doing some debugging, and I found weird thing. Why</p>
  
  <pre><code>string.Join("3", DateTime.Now.Year, DateTime.Now.Month, DateTime.Now.Day);
  </code></pre>
  
  <p>returns </p>
  
  <pre><code>2019312330
  </code></pre>
  
  <p>instead</p>
  
  <pre><code>3201912330
  </code></pre>