（0）单链表的创建，结点i处插入X，查找某元素、返回逻辑位置及物理指针并删除 (1)单链表的逆置.(2)清除单链表中多余的重复元素.(3)在有序的循环的带头结点单链表中插入数据X.(4)判断循环双向链表是否按值对称.(5)一元多项式的加法.-(0) The creation of a single linked list, at the junction i insert X, find an element, return to the logic of the position and