这是一个计算24点的小程序，用户随机生成四个数，以扑克牌的形式出现，程序能计算值为24的所有表达式-This is a 24 point calculation procedures for the small, four randomly generated numbers to the form of playing cards, the procedure should be calculated for all 24 of expression

一个计算24点游戏的程序，要求输入4个数,然后根据这4个数,列出可行的表达式.-24-point game a calculation procedure, asked to enter 4 numbers, then the 4 number of lists possible expression.

关于二十四点游戏的编程思路与基本算法（计算有括号的简单表达式。）-Programming on the second two p.m. game ideas and basic algorithms (calculated with a simple expression in parentheses.)

操作者任意输入4个牌张数字（1-9，A算1，花牌不算），程序要给出将这4个数字计算出24 的表达式，如果不能计算出这个结果，显示“no answer” -Operator arbitrary input 4 card' s numbers (1-9, A count one, wreath is not), the program should give these four figures calculated 24 expression, if you can not