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package Others;

import java.util.Scanner;

/**

* A utility to check if a given number is armstrong or not. Armstrong number is

* a number that is equal to the sum of cubes of its digits for example 0, 1,

* 153, 370, 371, 407 etc. For example 153 = 1^3 + 5^3 +3^3

*

* @author mani manasa mylavarapu

*/

public class Armstrong {

static Scanner scan;

public static void main(String[] args) {

scan = new Scanner(System.in);

int n = inputInt("please enter the number");

boolean isArmstrong = checkIfANumberIsAmstrongOrNot(n);

if (isArmstrong) {

System.out.println("the number is armstrong");

} else {

System.out.println("the number is not armstrong");

}

}

/**

* Checks whether a given number is an armstrong number or not. Armstrong

* number is a number that is equal to the sum of cubes of its digits for

* example 0, 1, 153, 370, 371, 407 etc.

*

* @param number

* @return boolean

*/

public static boolean checkIfANumberIsAmstrongOrNot(int number) {

int remainder, sum = 0, temp = 0;

temp = number;

while (number > 0) {

remainder = number % 10;

sum = sum + (remainder * remainder * remainder);

number = number / 10;

}

return sum == temp;

}

private static int inputInt(String string) {

System.out.print(string);

return Integer.parseInt(scan.nextLine());

}

}