public LinkedListNode(T element, LinkedListNode <T> prevLinkedListNode)
 {
     this.element            = element;
     this.next               = prevLinkedListNode.next;
     prevLinkedListNode.next = this;
 }
 public LinkedList()
 {
     head  = null;
     tail  = null;
     count = 0;
 }
 public LinkedListNode(T element)
 {
     this.element = element;
     next         = null;
 }