Find the Number is ArmStrong Number or Not

ARMSTRONG NUMBER  

Armstrong Numbers: The Magical Numbers of Mathematics

An Armstrong number (or Narcissistic number) is a fascinating concept in mathematics. It’s a number that equals the sum of its digits, each raised to the power of the total number of digits.

For example:

• 153: $1^3 + 5^3 + 3^3 = 153$
• 9474: $9^4 + 4^4 + 7^4 + 4^4 = 9474$

The uniqueness of Armstrong numbers lies in their self-referential property, making them both intriguing and rare. These numbers are often used in programming challenges to explore looping and mathematical logic.

Armstrong numbers appear in various digit counts:

• 3-digit examples: 153, 370, 371, 407
• 4-digit examples: 9474, 8208

The concept can extend to any number of digits, offering a playground for discovering larger Armstrong numbers using algorithms. These numbers demonstrate the beauty of simple mathematical rules leading to powerful and elegant patterns!

import java.util.*;

class HelloWorld {

    public static void main(String[] args) {

        int n=sc.nextInt();

        int sum=0,temp=n;

        int len=numlen(temp);

        while(temp!=0){

            sum+=Math.pow(temp%10,len);

            temp/=10;

        }

        System.out.print(n==sum?"yes":"no");

    }

}