创建一个保存学生基本信息的单链表，实现学生信息的建立（尾部插入和头部插入都要） 插入 删除 查看 逆置 删除值为X 等功能-Save the basic information students create a single list, to achieve the establishment of student information (and head into the tail to be inserted) into the deleted view the inverse functions set to delete the value X