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package main import ( "fmt" ) func faktorial(n int) int { var hasil int = 1 for i := 1; i < n; i++ { hasil = hasil * i } return hasil } func permutasi(n, r int) int { return faktorial(n) / faktorial(n-r) } func main() { var a, b int fmt.Print("input: ") fmt.Scanln(&a, &b) if a >= b { fmt.Println(permutasi(a, b)) } else { fmt.Println(permutasi(b, a)) } }
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