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17 lines
239 B

package correct
import "math/bits"
func IterativeFactorial(nb int) int {
limit := 12
if bits.UintSize == 64 {
limit = 20
}
if nb < 0 || nb > limit {
return 0
}
if nb == 0 {
return 1
}
return nb * IterativeFactorial(nb-1)
}