title: How to remove '0x' in hex and get 2 digits
body: <p>I am having a hex output <code>"Res"</code> which looks like this: </p>
  
  <pre><code>Res = 0x0 0x1a 0x9 0x14 0x13 0x0 
  </code></pre>
  
  <p>I want to 
  - remove the '0x' from the beginning of each 
  -have 2 digits 
  - and to remove the spaces in between </p>
  
  <p>i.e I want to have the Res like this: <code>001a09141300</code></p>
  
  <p>I tried <code>.join</code> but then I want to have 2 digits first. </p>