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Groovy example source code file (ackermann.groovy)

This example Groovy source code file (ackermann.groovy) 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

a, a, ack, ack

The Groovy ackermann.groovy source code

/*
The Computer Language Shootout
http://shootout.alioth.debian.org/

contributed by Jochen Hinrichsen
*/

def A(x, y) {
   // TODO: return statement is stated optional, but does not work w/o
   if (x == 0) return y+1
   if (y == 0) return A(x-1, 1)
   return A(x-1, A(x, y-1))
}

def n = this.args[0].toInteger()
def result = A(3, n)
println("Ack(3,${n}): ${result}")

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