30: digit fifth powers

30_digit_fifth_powers/main.go

@@ -0,0 +1,32 @@
+package main
+
+import "fmt"
+
+func main() {
+	sum := 0
+	for i := 2; i < 355000; i++ {
+		if sumOfFifthPowerOfDigits(i) == int64(i) {
+			sum += i
+		}
+	}
+	fmt.Println(sum)
+}
+
+func sumOfFifthPowerOfDigits(n int) int64 {
+	number := n
+	sum := int64(0)
+	for number > 0 {
+		x := number % 10
+		sum += fifthPower(x)
+		number /= 10
+	}
+	return sum
+}
+
+func fifthPower(n int) int64 {
+	p := int64(1)
+	for i := 0; i < 5; i++ {
+		p *= int64(n)
+	}
+	return p
+}