strongNumberCheck.java

import java.util.Scanner;

public class StrongNumberCheck {

  
   public static boolean isStrong(int number) {

     
      int sum = 0, lastDigit = 0;
      int tempNum = number;

     
      while(tempNum != 0) {
          lastDigit = tempNum % 10;
          sum += factorial(lastDigit);
          tempNum /= 10;
      }

     
      if(sum == number)
          return true; 
      return false; 
   }

   
   public static long factorial(int n) {
      long fact = 1;
      for(int i=1; i<=n; i++) {
          fact *= i;
      }
      return fact;
   }

   public static void main(String[] args) {
   
      int number = 0;
      boolean result = false;

   
      Scanner scan = new Scanner(System.in);

   
      System.out.print("Enter an integer number:: ");
      number = scan.nextInt();

   
      result = isStrong(number);
      if(result)
          System.out.println(number +
                  " is a strong number.");
      else
          System.out.println(number +
                 " is not a strong number");

      scan.close();
   }
}