带表头结点单向链表的实现（包括链表初始化和头（尾）插入建链，元素的插入，删除，查找，链表的逆置，求表长，推出操作的实现）-Junction point of one-way linked list (including the insert to build a chain of linked list initialization and head (tail), element insertion, deletion, search, and the inverse set of the l