public class Fig01_04
    {

        public static void printDigit( int n )
        {
            System.out.print( n );
        }

/* START: Fig01_04.txt */
        public static void printOut( int n )  /* Print nonnegative n */
        {
            if( n >= 10 )
                printOut( n / 10 );
            printDigit( n % 10 );
        }
/* END */

        public static void main( String [ ] args )
        {
            printOut( 1369 );
            System.out.println( );
        }
    }