根据线性表的抽象数据类型的定义，选择下面任一种链式结构实现线性表， 并完成线性表的基本功能。 线性表存储结构（五选一）： 1、 带头结点的单链表 2、 不带头结点的单链表 3、 循环链表 4、 双链表 5、 静态链表 线性表的基本功能： 1、构造：使用头插法、尾插法两种方法 2、插入：要求建立的链表按照关键字从小到大有序 3、删除 4、查找 5、获取链表长度 6、销毁 7、其他：可自行定义 编写测试main()函数测试线性表的正确性-According to the linear form of abstract data type definition, select a chain structure to achieve any of the following linear form, and complete the basic functions of the linear form. Linear table storage structure (five choose one): 1, the lead single linked list nodes 2, do not take the lead in a single linked list nodes 3, 4 circular list, double-linked list five basic functions of linear static list table: 1, Construction: Use Head interpolation method, two methods tail interpolation 2, insert: in accordance with the requirements established in the keyword list from small to large order 3, 4 deleted, find 5 to get the list length 6, 7 destroyed, other: You can define your own writing test main () function to test the accuracy of the linear form