work-on-java

public class ArmstrongNumber {

public static void main(String[] args) {
	// TODO Auto-generated method stub
	Scanner s = new Scanner(System.in);
	int n = s.nextInt();
	System.out.println(armstrong(n));
}

public static boolean armstrong(int num) {
	int i = 0;
	int k = num;
	int b = num;
	int sum = 0;
	int rem = 0;
	while (num > 0) {
		num = num / 10;
		i++;
	}
	while (k > 0) {
		rem = k % 10;
		int j = (int) Math.pow(rem, i);
		sum = sum + j;
		k = k / 10;
	}
	if (sum == b) {
		return true;
	} else {
		return false;
	}
}