title: Print a simply linked list backwards with no recursion, in two passes at most, using constant extra memory, leaving it intact
body: <p>You must print a simply linked list backwards:</p>
  
  <ul>
  <li>Without recursion</li>
  <li>With constant extra memory</li>
  <li>In linear time</li>
  <li>Leaving the list intact</li>
  <li><strong>Added Later</strong> Two passes at most</li>
  </ul>