public static void main(String[] args) { LinkedList p = null, q = null, head = null; for (int i = 1; i <= 10; i++) { q = new LinkedList(); q.data = i; q.next = null; if (head == null) { head = q; p = q; } else { p.next = q; p = q; } } displayQueue(head); head = reverseQueue(head); displayQueue(head); }