title: string to list and list to string conversion - without split
body: <p>Could you share how to convert string to list and vice versa as shown below (without splitting each words)</p>
  <ul>
  <li>Input: string <code>'I am a boy'</code></li>
  <li>Output: <code>['I am a boy']</code></li>
  </ul>
  <p>and</p>
  <ul>
  <li>Input: list <code>['I am a boy']</code></li>
  <li>Output: string <code>'I am a boy'</code></li>
  </ul>
  <p>Just to be clear, The first part is pretty straightforward and did  implemented before the post. I just stuck for the 2nd problem.</p>