public class Test2 {
    public static void main(String[] args) {

        // build the list 1 3 5 .. 19 1 3 5 .. 19
        Node handle = null;
        for (int i = 19; i > 0; i -= 2) {
            handle = new Node(i, handle);
        }
        for (int i = 19; i > 0; i -= 2) {
            handle = new Node(i, handle);
        }

        // print the list
        NodeMethods.print(handle);

        // change each 13 to a 0
        handle = NodeMethods.change(13, 0, handle);

        // print the new list
        NodeMethods.print(handle);
    }
}