//CountDown.java

public class RecursiveCountdown
{
    public static void main(String[] args)
    {
        countDown(3);
    }

    public static void countDown(int num)
    {
        if (num <= 0)
        {
            System.out.println();
        }
        else
        {
            System.out.print(num);
            countDown(num - 1);
        }
    }
}