title: How to add quotes around each word in a string in R?
body: <p>I have a string:</p>
  
  <pre><code>words&lt;-"Monday, Tuesday, Wednesday, Thursday,Friday"
  </code></pre>
  
  <p>and I only need add quotes to each word:</p>
  
  <pre><code>"Monday", "Tuesday", "Wednesday", "Thursday","Friday"
  </code></pre>
  
  <p>getting a length of five string.</p>
  
  <p>I know there are many post about this topic, but I did´t find anything about it in R.</p>
  
  <p>Many thanks.</p>