说明：  这是一个数据结构课程的关于带表头节点问题的的源代码，内含有相关的程序说明，其中还涉及到有STL语言的相关算法
(This is a data structure course with table on the issue of the first node of the source code, containing the relevant explanation of the procedures, which also involved the language of the STL algorithms)