Problem #30

Problem link
Solution:

package main


func main() {
    limit := 9 * 9 * 9 * 9 * 9 * (5 - 1)
    sum := 0
    for i := 22; i < limit; i++ {
        if i == sumOfFifthPowers(i) {
            sum += i
        }
    }
    println(sum)
}

func sumOfFifthPowers(in int) int {
    sum := 0
    for in > 0 {
        sum += fifthPower(in % 10)
        in /= 10
    }
    return sum
}

func fifthPower(in int) int {
    return in * in * in * in * in
}

Result: 443839
Time: 0m0.038s