说明：  现实世界中的算法：pdf格式,是伯克利大四学生和老师的集体作品,非常通俗而又详尽地总结了许多常见的算法,包括信息压缩,各类
(Algorithms in the Real World: pdf format, a collective work of Berkeley senior students and teachers, summarizes many common algorithms in great popularity and detail, including information compression, all kinds of)