線性表的順序表示和實現：Union

void Union(SqList *La,SqList Lb){
    int La_len = ListLength(*La);
    int Lb_len = ListLength(Lb);
    ElemType e;
    for(int i=1;i<=Lb_len;i++){
        GetElem(Lb,i,&e);
        if(!LocateElem(*La,e,my_compare))
            ListInsert(La,++La_len,e);
    }
}