In this example, You learn about an Armstrong Number in java program.
Here you learn an armstrong number in Java, You are given a number and the task of the program to check number is armstrong or not.
Armstrong Number Program in Java
import java.util.Scanner;
public class ArmstrongNumber
{
public static void main(String args[])
{
int n, sum = 0, temp, remainder, digits = 0;
Scanner in = new Scanner(System.in);
System.out.println("Enter a number to check for Armstrong Number");
n = in.nextInt();
temp = n;
// Count number of digits
while (temp != 0) {
digits++;
temp = temp/10;
}
temp = n;
while (temp != 0) {
remainder = temp%10;
sum = sum + power(remainder, digits);
temp = temp/10;
}
if (n == sum)
System.out.println(n + " is an Armstrong Number.");
else
System.out.println(n + " is not an Armstrong Number.");
}
static int power(int n, int r) {
int c, p = 1;
for (c = 1; c <= r; c++)
p = p*n;
return p;
}
}
Enter a number to check for Armstrong Number: 153 153 is an Armstrong Number.
