/*
  Author:  James Tam
  Version: 2015

  Learning objective: tracing a simple recursive backtracking example to
  display a 1D array in current and then in reverse order.
*/

public class DriverReverseList
{
    static int [] list = {9,8,7,6,5,4,3,2,1};
    static final int FIRST = 0;

    public static void forward(int index)
    {
        if (index < (list.length-1))
        {
            System.out.print(list[index]);
            forward(++index);
        }
    }

    public static void reverse(int index)
    {
        if (index < (list.length-1))
        {
            reverse(++index);
            System.out.print(list[index]);
        }
    }

    public static void main(String [] args)
    {
        forward(FIRST);
        System.out.println();
        reverse(FIRST);
        System.out.println();
    }
}