Java Program to find Armstrong numbers
An Armstrong number is a three digit number for which sum of cube of its digit is equal to the number. Example of Armstrong number is 153 as
153= 1+ 125+27 which 1^3+5^3+3^3.
Another Armstrong number is 371.
import java.util.Scanner;
public class ArmstrongTest {
public static void main(String[] args) {
System.out.println(“Enetr Number”);
Scanner sc = new Scanner(System.in);
int num = sc.nextInt();
System.out.println(“Given Number =” + num + ” is Armstrong=”
+ isArmstrong(num));
}
private static boolean isArmstrong(int num) {
int dummy = 0;
int rem = 0;
int originalNum = num;
while (num > 0) {
rem = num % 10;
num /= 10;
dummy += rem * rem * rem;
}
return (originalNum == dummy);
}
}
OutPut:
Enetr Number
153
Given Number =153 is Armstrong=true
+++++++++++++++++++++++++
Enetr Number
200
Given Number =200 is Armstrong=false
+++++++++++++++++++++++++
Enetr Number
371
Given Number =371 is Armstrong=true