链表中的数据是以节点来表示的，每个结点的构成：元素(数据元素的映象) + 指针(指示后继元素存储位置)，元素就是存储数据的存储单元，指针就是连接每个结点的地址数据。-Linked list data are represented as nodes, each node of the element (mapping data elements)+ pointer (indicating the following element storage location, storage unit) element is the storage of data, the data connection pointer is the address of each node.