说明：  利用指针技术，以一维整型数组中间元素为中心，对称对调所有元素：即首元素与末元素对调、第二元素与次末元素对调…。
(use of technical indicators to a peacekeeping integer array elements to the middle Center, symmetric swap all the elements : that is the end of the first elements and elements have been reversed, and the second element, and the sub-elements swap end ....)