01.02.Bulls and Cows - мое

using System;
class BullsAndCows
{
    static void Main()
    {
        int secretNumber = int.Parse(Console.ReadLine());
        int bulls = Convert.ToInt32(Console.ReadLine());
        int cows = Convert.ToInt32(Console.ReadLine());
        int result = 0;
        for (int guessNumber = 1111; guessNumber <= 9999; guessNumber++)
        {

            if (guessNumber.ToString().IndexOf('0') > -1)
            {
                continue;
            }
            int bullsFound = FindBulls(guessNumber,secretNumber);
            int cowsFound = FindCows(guessNumber, secretNumber);
            if (bulls == bullsFound && cowsFound == cows)
            {
                result++;
                Console.Write(guessNumber + " ");
            }
        }
        if (result == 0)
        {
            Console.WriteLine("No");
        }
    }

    static int FindCows(int guessNumber, int secretNumber)
    {
        char[] currentGuessNumber = guessNumber.ToString().ToCharArray();
        char[] currentSecNumber = secretNumber.ToString().ToCharArray();
        int cowsCount = 0;
        for (int i = 0; i < 4; i++)
        {
            if (currentGuessNumber[i] == currentSecNumber[i])//тук трябва, защото в долния метод не сме го направили
            {
                currentGuessNumber[i] = '*';
                currentSecNumber[i] = '*';
            }
        }


        for (int i = 0; i < 4; i++)
        {
            for (int j = 0; j < 4; j++)
            {
                if (currentGuessNumber[i] != '*' && currentGuessNumber[i] == currentSecNumber[j])
                {
                    currentGuessNumber[i] = '*';
                    currentSecNumber[j] = '*';
                    cowsCount++;
                }
            }
        }
        return cowsCount;
    }

    static int FindBulls(int guessNumber, int secretNumber)
    {
        char[] currentGuessNumber = guessNumber.ToString().ToCharArray();
        char[] currentSecNumber = secretNumber.ToString().ToCharArray();
        int bullsCount = 0;

        for (int i = 0; i < 4; i++)
        {
            if (currentGuessNumber[i] == currentSecNumber[i])
            {
                bullsCount++;
            }
        }
        return bullsCount;
    }
}