title: How to create a simple circular array?
body: <p>According to my textbook, realizations of Queue ADT can be done:</p>
  
  <ul>
  <li>Using circular arrays</li>
  <li>Using linked lists</li>
  </ul>
  
  <p>How do you create a simple circular array? I'm not sure if it's widely used. Is it just a linked list where the last item points back to the first item?</p>