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。-The games can be randomly generated by the program, four integers between 0 to 9, without repeating. Those who play the game through a user input to match the four num