伙伴系统虚拟分配和回收内存方法，buddy算法-A method about partner systems distribute and recycle memory visually

一个内存管理的伙伴算法，实现内存块申请时的分配和释放后的回收。-Memory management algorithm for a partner to achieve an application memory block allocation and post-release recovery.

伙伴系统的一些基本功能实现 包含分配内存函数及回收操作(Some basic functions of the buddy system are implemented. Contains allocated memory functions and recovery operations.)