friend class DoubleLinkList<DataType>;
DataType nValue;
DoubleListNode<DataType> *pre;
DoubleListNode<DataType> *next;
};
template<class DataType>
class DoubleLinkList
{
public:
DoubleLinkList(int size)
{
head =new DoubleListNode<DataType>();
maxSize=size;
nLength=0;
}
~DoubleLinkList()
{
DestroyDoubleLinkList();
//delete head;
}