RosettaCodeData/Task/Monte-Carlo-methods/Fantom/monte-carlo-methods.fantom

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class MontyCarlo
{
// assume square/circle of width 1 unit
static Float findPi (Int samples)
{
Int insideCircle := 0
samples.times
{
x := Float.random
y := Float.random
if ((x*x + y*y).sqrt <= 1.0f) insideCircle += 1
}
return insideCircle * 4.0f / samples
}
public static Void main ()
{
[100, 1000, 10000, 1000000, 10000000].each |sample|
{
echo ("Sample size $sample gives PI as ${findPi(sample)}")
}
}
}