SinglyLinkedListNode p1 = head1;
        SinglyLinkedListNode p2 = head2;
    while(p1 != null && p2 != null)
    {
      if(p1.data != p2.data)
      {
           return false;
      }
    p1 = p1.next; 
    p2 = p2.next;
      }

   return p1==null && p2 == null;