Method reverse

12_LinkedList.java/DLL.java:56–68

()

        }
        
    public void reverse() {
        Node curr = head;
        Node prev = null;
        Node next;
        while(curr != null) {
            next = curr.next;
            curr.next = prev;
            curr.prev = next;
            prev = curr;
            curr = next;
        }
        head = prev;
    }
    public static void main(String args[]) {
        DLL dll = new DLL();
        dll.addFirst(3);