猜数字游戏 计算机随机产生一个无重复数字的四位数 若所猜的数位置与数字均正确,会显示一个A,若数字对位置不对,会显示一个B.-Number guessing game is a computer randomly generated four-digit number without repetition by the guess that if the number of locations and figures are correct, will show an A, if the