数据结构跟离线数学总是有着千丝万缕的联系，本章的图更是充分体现了这一点，看看离散数学在实际的计算机世界是怎么样的吧-Mathematics is always with the offline data structures are inextricably linked, this chapter is the plan fully reflects this, see discrete mathematics in the real computer world is kind of how