建立顺序表，实现取元素、判断表是否为空、求表长、打印、查找、求前驱、求后继、插入、删除等操作。编写就地逆置顺序表的算法，即利用原表的存储空间将线性表(a1, a2, … , an) 逆置为(an , … ,a2 , a1 ) -Established order of the table to achieve taking elements to determine whether the table is empty, seeking long table, print, search,