title: Syntax to move backwards in LinkedList?
body: <p>i know that LinkedLists are implemented in a doubly linked way, so each node has a next and a previous pointer. however, i couldn't find what syntax to use to access the previous nodes?
  i looked on the java api, and there is a method to iterate through a linkedlist backwards. 
  that to me, implies that there is an easy way to access previous nodes P:. </p>
  
  <p>i am trying to design an experiment to prove that LinkedLists isn't just a singlely linked list but i can't think of how to do so without moving backwards in linkedlists. </p>
  
  <p>please explain to  me how to move backwards if it is possible, thank you very much. </p>