将直接插入排序、直接选择排序、冒泡排序、顺序查找函数封装到第9章的数组类中，作为成员函数。实现并测试这个类(Directly into the sorting, direct selection, sorting, bubble sorting, sequential search function, encapsulated in the ninth chapter of the array class, as a member function. Implement and test this class)