19c19
< 	head = null;
---
> 	head = new Node();
29,32c29
< 	if (head == null)
< 	    head = tmp;
< 	else
< 	    tail.next = tmp;
---
> 	tail.next = tmp;
39c36
< 	for (Node n = head; n != null; n = n.next)
---
> 	for (Node n = head.next; n != null; n = n.next)
54,58c51
< 	    if (n == head)
< 		head = n.next;
< 	    else {
< 		p.next = n.next;
< 	    }
---
> 	    p.next = n.next;
73c66
< 	for (Node n = head; n != null; n = n.next)
---
> 	for (Node n = head.next; n != null; n = n.next)
79c72
< 	for (Node n = head; n != null; n = n.next) {
---
> 	for (Node n = head.next; n != null; n = n.next) {
88c81
< 	Node n = head;
---
> 	Node n = head.next;
110c103
< 	    current = head;
---
> 	    current = head.next;