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33 lines
501 B

package main
import (
"math/bits"
student "student"
"lib"
)
func recursiveFactorial(nb int) int {
limit := 20
if nb < 0 || nb > limit {
return 0
}
if nb == 0 {
return 1
}
return nb * recursiveFactorial(nb-1)
}
func main() {
if bits.UintSize != 64 {
panic("only works on 64 bits CPU")
}
table := append(
lib.MultRandInt(),
lib.IntRange(0, 20)...,
)
for _, arg := range table {
lib.Challenge("RecursiveFactorial", student.RecursiveFactorial, recursiveFactorial, arg)
}
}