记得《非诚勿扰》里开始有这样一个画外音:世界上无处不存在分歧、矛盾,当这些分歧、矛盾不能得到妥善处理的时候,世界就不太平了,人与人之间的口角、斗殴,国与国之间的离间、战争便开始了.其实数列也是如此,数列里也有许许多多的矛盾需要去分类处理.本文就分类讨论思想在数列中的应用做了一些整理,供大家参考. I remember “You Are the One” in the beginning of such a voice-over: Differences and conflicts everywhere in the world, when these differences and contradictions can not be properly handled, the world is not peaceful, people between the mouth, brawl, the country In fact, the sequence is also true, there are many contradictions in the sequence need to be classified.This article on the classification of ideas in the application of the sequence do some collation for your reference.