建立顺序表，完成顺序表的基本操作：初始化、插入、删除、输出（遍历）、销毁, 置空表、求表长、查找元素、判线性表是否为空等。-Establish the order form, complete the order form the basic operations: initialization, insert, delete, output (traverse), destroyed, blank table, find the length of the table, find elemen