public static void kaprekarNumbers(int p, int q) {
    // Write your code here
        for (int i = p; i < q; i++) {
            if (checkResult(i))
                System.out.print(i + " ");
        }
    }
        private static boolean checkResult(int n) {
        int temp = n;
        n = n * n;
        int c = count(n);
        int length = c / 2;
//        System.out.println(length);
        String r = "";
        while (length > 0) {
            int d = n % 10;
            r = d + r;
            n = n / 10;
            length--;
        }
        int res = Integer.parseInt(r) + n;
        if (res == temp)
            return true;
        else
            return false;
    }
        private static int count(int n) {
        int c = 0;
        do {
            c++;
            n = n / 10;
        } while (n != 0);
        return c;
    }