# 动态链

在介绍完了环和强制的思路后，接下来我们继续展开描述链的下一种推广思路：**动态**（Dynamic）。

动态链是一种特殊的链结构类型，它直接依赖链内部带有分支，甚至分支里带分支的套娃逻辑。从理念分类的角度来讲，强制链可以算作为动态链的其中一种形式，但是强制链本身提供的推理视角又较为独特，因此又可以单独列出，总之是这么个关系。

动态链的内容因为依赖于套娃的分支设计，所以有些时候会非常难以理解（尤其是找删数的时候）。所以我们打算花一些篇幅对动态链的设计和推理，以及删数分析进行细致讲解。它应该也是链理论最难以理解的内容了。


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