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Class Baseball 의 메서드
사용자에게 0또는 중복숫자는 다시 입력할수있게 -1를 리턴함.
다음과 같이 게임을 구성하는 클레스를 만들고 메서드를 구현하였습니다.
사용자는 입력을 할때 중복숫자와 0을 입력할경우 check()메서드에서 판단하여 -1를 리턴해
재입력을 하게 만들었습니다.
check()에서 정답을 맞출 경우 3을 리턴해서 정답을 맞출떄까지 무한으로 도는 loop를 탈출하게 하고
1 과 2를 입력 받아 게임을 재시작할지 결정을 하게 만들었습니다.