编写一个能演示执行两个集合之间的并、交和差运算结果的程序。

【基本要求】

1)两个集合中的元素为长度不同的字符串，字符串中可包含大小写字符和数字字符，

程序以用户的输入数据建立集合，然后执行集合运算，分别输出结果-You can prepare a presentation and execution, delivery and operation difference between the results of two sets of procedures. [Basic requirements] 1) two sets of elements of different lengths, a string can be included in the case and numeric characters, the program to build a collection of user input data, then perform set operations, respectively output