這是一個由java寫成的猜數字遊戲！目的在猜4個數字！如果輸入的數字和位置是對的等於一個A！如果只有數字對但位置不對等於一個B！由此來推測出正確的4個數字！-This is a java written猜数字game! The purpose of guessing the number 4! If you enter the number and location is the equivalent to an A! If only the number but the position is