public void Calculate(Answer answer, Guess guess) { for (int i = 0; i < Constant.Digit; i++) { int j = (i + 1) % Constant.Digit; int k = (i + 2) % Constant.Digit; if (guess[i] == answer[i]) { _strike++; } else if (guess[i] == answer[j] || guess[i] == answer[k]) { _ball++; } else { _out++; } } }