How do you code a program to find kaprekar number?

Answer 1

import java.io.*;

class kaprekar

{

public static void main(String args[])throws IOException

{

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

System.out.println("Enter any number");

int n=Integer.parseInt(br.readLine());

int t=n,count=0;

while(n!=0)

{

n=n/10;

count++;

}

int s=t*t;

int p=(int)Math.pow(10,count);

int ld=s%p;

int minus=s-ld;

int fd=minus/p;

int sum=fd+ld;

if(sum==t)

{

System.out.println("Kaprekar Number");

}

else

{

System.out.println("Not a Kaprekar number");

}

}

}