扑克牌游戏中，用4张牌，根据点数，只使用加减乘除运算得到24点。该程序从游戏中抽象出其算法，能够将有解的计算过程全部列出来，有一定学习参考价值。-4 card poker game, based on the number of points, using only addition, subtraction, multiplication, and division operations get 24 points. The program from the game abstract alg