求集合运算ＡＵＢ

利用两个线性表la和lb分别存放集合Ａ和Ｂ的成员，依次取出lb中的每个元素，按其值查找线性表la，若la中不存在该元素，则将它插入到la中去，最后线性表la就存放了集合ＡＵＢ的元素.-AUB set operations for the use of two linear la Table and lb respectively storage pools A and B members, Retrieve lb followed each of the elements, according to the value of linear search Table la, la if not the existence of the elements, It will be inserted into la China, and the final linear la Table on the storage pool AUB element.