public static void deleteDups2(LinkedListNode n) {
		if(n == null)
			return;
		for(LinkedListNode i = n ; i.next != null ; i = i.next) {
			int original = i.val;
			for (LinkedListNode j = i; j.next != null;) {
				if(j.next.val == original)
					j.next = j.next.next;
				else
					j = j.next;
			}
		}
	}