RosettaCodeData/Task/Mutual-recursion/Sidef/mutual-recursion.sidef

func F(){}
func M(){}
 
F = func(n) { n > 0 ? (n - M(F(n-1))) : 1 }
M = func(n) { n > 0 ? (n - F(M(n-1))) : 0 }
 
[F, M].each { |seq|
    {|i| seq.call(i)}.map(^20).join(' ').say
}