假定已经有许多应用采用了程序1 - 1 5中所定义的C u r r e n c y类，现在我们想要对C u r r e n c y类

的描述进行修改，使其应用频率最高的两个函数A d d和I n c r e m e n t可以运行得更快，从而提高应

用程序的执行速度。由于用户仅能通过p u b l i c部分所提供的接口与C u r r e n c y类进行交互，-assumption has been used for many applications of the program 1 - 1 5 as defined in the C u r n c e r y category, right now we want C u r n c e r y kind of descr iption changes make it the highest frequency of application function A 2 d d and I n c e r m e n t can run faster, thereby enhancing the application's execution. Because users only via p u b l i c parts of the interface and C u r n c e r y interactive category,