编写猜数游戏，计算机产生4个互不相同的个位数，让用户猜，用户每猜一次后，计算机给出猜测的结果：nAmB,其中n表示有n个数即猜对了数字也猜对了位置，m表示有m个数只猜对了数字，没猜对位置-The preparation of a number guessing game, computer-generated four separate one from the single digits, allowing users to guess, the user once every guess, the computer gives the results of speculation: nAmB, where n number n indicated that the number is also guess guess on a location, m that there are m number of digital only guess, no guess on the location of