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Groovy example source code file (ackermann.java)

This example Groovy source code file (ackermann.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Groovy tags/keywords

ack, ack

The Groovy ackermann.java source code

// $Id: ackermann.java,v 1.2 2005-05-13 16:24:17 igouy-guest Exp $
// http://www.bagley.org/~doug/shootout/ 

public class ackermann {
    public static void main(String[] args) {
	int num = Integer.parseInt(args[0]);
	System.out.println("Ack(3," + num + "): " + Ack(3, num));
    }
    public static int Ack(int m, int n) {
	return (m == 0) ? (n + 1) : ((n == 0) ? Ack(m-1, 1) :
				     Ack(m-1, Ack(m, n - 1)));
    }
}

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