Armstrong

// Java Code to guess if a number is Armstrong or not

/* An Armstrong number is a number that is a number that is 
    equal to the sum of its own digits raised to the number of digits. 
*/




import java.util.Scanner;

public class ArmstrongNumber {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        System.out.print("Enter a number: ");
        int number = scanner.nextInt();

        int numDigits = String.valueOf(number).length(); // get number of digits in the number

        int sum = 0;
        int tempNumber = number;
        while (tempNumber > 0) {
            int digit = tempNumber % 10;
            sum += Math.pow(digit, numDigits);
            tempNumber /= 10;
        }

        if (sum == number) {
            System.out.println(number + " is an Armstrong number.");
        } else {
            System.out.println(number + " is not an Armstrong number.");
        }
    }
}