title: How do I convert an array of strings into a comma-separated string?
body: <p>I have an array:</p>
  
  <pre><code>array = ["10", "20", "50", "99"]
  </code></pre>
  
  <p>And I want to convert it into a simple comma-separated string list like this:</p>
  
  <pre><code>"10", "20", "50", "99"
  </code></pre>