定义一个基类MyArray，基类中可以存放一组整数，定义一个类SortArray继承Myarray，实现排序功能，定义一个ReArray继承Myarray，实现逆转功能。-Definition of a base class MyArray, the base class can store a set of integers, the definition of a class SortArray inherited Myarray, to achieve the sorting functi