Question

How to find the numbers that are the sum of fourth powers of their digits in Java

Answer 1

public class FourthPowerSumFinder {

    // Computes the sum of the fourth powers of the digits of n
    private static int sumOfFourthPowers(int n) {
        int sum = 0;
        int temp = n;

        while (temp > 0) {
            int digit = temp % 10;
            sum += digit * digit * digit * digit; 
            temp /= 10;
        }

        return sum;
    }

    public static void main(String[] args) {
        for (int i = 1000; i < 1_000_000; i++) {
            if (i == sumOfFourthPowers(i)) {
                System.out.println(i);
            }
        }
    }
}



/*
run:

1634
8208
9474

*/

 

70+ SQL courses for beginners and professionals