Java program to find a number is Narcissistic Number or not.

Narcissistic number is a number that is the sum of its own digits each raised to the power of the number of digits.

1634
Total digit count is 4

Then you have apply Armstrong Number method on it.

1pow(4)+6power(4)+3pow(4)+4pow(4)
gives
1634. hence true;

 public class PracticeDemo {  
      public static int getDigitCount(int number){  
           int divisor=0,replacer=number,count=1;  
           do{  
                divisor=replacer/10;  
                count++;  
                replacer=divisor;  
           }while(divisor>10);  
           return count;  
      }  
      public static boolean checkNarcissistic(int value){  
           boolean isNarcissistic=false;  
           int remainder,divisible=0,replacer=value,power=getDigitCount(value),suming=0;  
           do{  
                remainder=replacer%10;  
                divisible=replacer/10;  
                suming+=Math.pow(remainder, power);  
                replacer=divisible;  
           }while(divisible>10);  
           suming=(int)(suming+Math.pow(divisible, power));  
           if(suming==value)  
                isNarcissistic=true;  
           else  
                isNarcissistic=false;  
                return isNarcissistic;  
      }  
      public static void main(String [] args){  
           Scanner sc=new Scanner(System.in);  
           int x=sc.nextInt();  
           getDigitCount(x);  
           System.out.println(checkNarcissistic(x) ? "True":"False");  
           sc.close();  
      }  
      }  

Output: 1634
True
1234
False