Groovy example source code file (random.groovy)

This example Groovy source code file (random.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

ia, ia, ic, ic, im, im

The Groovy random.groovy source code

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

	contributed by Jochen Hinrichsen
*/

def IM = 139968
def IA = 3877
def IC = 29573
def last = 42D

def gen_random(Double max) {
	last = (last * IA + IC) % IM
	max * last / IM
}

def n = (args.length == 0 ? 1 : args[0].toInteger()) - 1
while (n--) {
	gen_random(100D)
}

// TODO groovy does not support varargs
// def s = new java.io.PrintStream(System.out)
// s.printf("%.9f", gen_random(100D))

def nf = java.text.NumberFormat.getInstance()
nf.setMaximumFractionDigits(9)
nf.setMinimumFractionDigits(9)
nf.setGroupingUsed(false)
println nf.format(gen_random(100D))

// EOF