设计一款简易的猜数字游戏。该游戏可以由程序随机产生四个0到9之间的整数，且不重复。玩游戏者通过由用户输入四个数字来匹配上面所产生的数字。A表示位置正确且数字正确，B表示数字正确而位置不正确。-Design a simple guessing game. The game can be randomly generated by the program four numbers between 0-9, will not be repeated. Game player through four numbers entered by the user to match the figures produced above. A indicates the position of the right and correct figures, B represents a number correct and incorrect position.