此程序为一个用链表实现集合的各种运算，包括求并集，求交集，求补集，求笛卡儿集等，是本人刚学完数据结构是写的-the procedure used for a pool List in the operation, including the demand and to gather, seek common ground, seeking fill sets, Set for Descartes, I was just learning to End data structure is writ

用数组的方法实现集合A\B对称差,而对称差就是可以实现两个集合的交集 并集以及补集的程序-it can be good!!!

能实现2个整数集合的基本操作，求交集、并集的等等。-To achieve the basic operation of the two set of integers, for intersection and set.