package main

import (
    "fmt"
    "strconv"
)

func main() {
    min := 1
    max := 1000
    for i := min; i <= max; i++ {
        if isNarcissisticNumber(i) {
            fmt.Printf("%d是水仙花数\n", i)
        }
    }
}

func isNarcissisticNumber(n int) bool {
    tmp := strconv.Itoa(n)
    data := []byte(tmp)
    lenth := len(data)
    var result int = 0
    for i := 0; i < lenth; i++ {
        number, _ := strconv.Atoi(string(data[i]))
        result += number * number * number
    }
    if n == result {
        return true
    } else {
        return false
    }
}

package main

import "fmt"

func main() {
    fmt.Println(factorial(5))
}

func factorial(n uint) uint {
    if n == 0 {
        return 1
    }
    if n == 1 {
        return n
    }
    return n * factorial(n-1)
}