36 lines
625 B
Text
36 lines
625 B
Text
class Main
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{
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static Int factorialRecursive (Int n)
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{
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if (n <= 1)
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return 1
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else
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return n * (factorialRecursive (n - 1))
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}
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static Int factorialIterative (Int n)
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{
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Int product := 1
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for (Int i := 2; i <=n ; ++i)
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{
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product *= i
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}
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return product
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}
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static Int factorialFunctional (Int n)
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{
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(1..n).toList.reduce(1) |a,v|
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{
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v->mult(a) // use a dynamic invoke
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// alternatively, cast a: v * (Int)a
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}
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}
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public static Void main ()
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{
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echo (factorialRecursive(20))
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echo (factorialIterative(20))
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echo (factorialFunctional(20))
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}
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}
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