【LaTeX应用】树形结构，二叉树
导
读
二叉树的形式很多，借着递归的二叉树形式，画个递归过程
图形比较大，标注的信息有限，示意图比较简单
正
文
下面是实现过程的主要代码部分，每条代码的具体语法这里不一一解释了，通过规范的排版，基本上已经将每条代码的含义解释清楚了，请耐心点阅读。这些代码可以直接运行，实现如图所示效果，可以当做模板应用。
\begin{tikzpicture}[->,>=stealth,level/.style={sibling distance = 7cm/#1,level distance = 2cm},edge from parent path = {},arrow1/.style = {draw = black, dashed, thick, -{Latex[length = 2mm, width = 1.5mm]},},arrow2/.style = {draw = black, thick, -{Latex[length = 2mm, width = 1.5mm]},},treenode/.style = {align=center, inner sep=0pt, text centered,font=\sffamily},arnx/.style = {treenode, rectangle, minimum width=2em, minimum height=1em}]\node (n0) [arnx] {$ f(6,5,6) $}child{ node (n01) [arnx] {$ f(5,5,6) $}child{ node (n11) [arnx] {$ f(4,5,6) $}child{ node (n12) [arnx] {$ f(3,5,6) $}child{ node (n21) [arnx] {$ f(2,.) $}}child{ node (n22) [arnx] {$ f(1,.) $}}}child{ node (n13) [arnx] {$ f(2,.) $}}}child{ node (n23) [arnx] {$ f(3,5,6) $}child{ node (n31) [arnx] {$ f(2,.) $}}child{ node (n32) [arnx] {$ f(1,.) $}}}}child{ node (n02) [arnx] {$ f(4,5,6) $}child{ node (n41) [arnx] {$ f(3,5,6) $}child{ node (n42) [arnx] {$ f(2,.) $}}child{ node (n43) [arnx] {$ f(1,.) $}}}child{ node (n51) [arnx] {$ f(2,.) $}}};\path[arrow1] ([xshift=-2ex] n01.north) -- node[left]{0}([xshift=-2ex] n0.south);\path[arrow2] ([xshift=2ex] n0.south) -- ([xshift=2ex] n01.north);\path[arrow1] ([xshift=-2ex] n02.north) -- node[left]{5}([xshift=-2ex] n0.south);\path[arrow2] ([xshift=2ex] n0.south) -- ([xshift=2ex] n02.north);\path[arrow1] ([xshift=-2ex] n11.north) -- node[left]{5}([xshift=-2ex] n01.south);\path[arrow2] ([xshift=2ex] n01.south) -- ([xshift=2ex] n11.north);\path[arrow1] ([xshift=-2ex] n12.north) -- node[left]{4}([xshift=-2ex] n11.south);\path[arrow2] ([xshift=2ex] n11.south) -- ([xshift=2ex] n12.north);\path[arrow1] ([xshift=-2ex] n21.north) -- node[left]{1}([xshift=-2ex] n12.south);\path[arrow2] ([xshift=2ex] n12.south) -- ([xshift=2ex] n21.north);\path[arrow1] ([xshift=-2ex] n13.north) -- node[left]{1}([xshift=-2ex] n11.south);\path[arrow2] ([xshift=2ex] n11.south) -- ([xshift=2ex] n13.north);\path[arrow1] ([xshift=-2ex] n23.north) -- node[left]{4}([xshift=-2ex] n01.south);\path[arrow2] ([xshift=2ex] n01.south) -- ([xshift=2ex] n23.north);\path[arrow1] ([xshift=-2ex] n31.north) -- node[left]{1}([xshift=-2ex] n23.south);\path[arrow2] ([xshift=2ex] n23.south) -- ([xshift=2ex] n31.north);\path[arrow1] ([xshift=-2ex] n32.north) -- node[left]{1}([xshift=-2ex] n23.south);\path[arrow2] ([xshift=2ex] n23.south) -- ([xshift=2ex] n32.north);\path[arrow1] ([xshift=-2ex] n22.north) -- node[left]{1}([xshift=-2ex] n12.south);\path[arrow2] ([xshift=2ex] n12.south) -- ([xshift=2ex] n22.north);\path[arrow1] ([xshift=-2ex] n41.north) -- node[left]{4}([xshift=-2ex] n02.south);\path[arrow2] ([xshift=2ex] n02.south) -- ([xshift=2ex] n41.north);\path[arrow1] ([xshift=-2ex] n51.north) -- node[left]{1}([xshift=-2ex] n02.south);\path[arrow2] ([xshift=2ex] n02.south) -- ([xshift=2ex] n51.north);\path[arrow1] ([xshift=-2ex] n42.north) -- node[left]{1}([xshift=-2ex] n41.south);\path[arrow2] ([xshift=2ex] n41.south) -- ([xshift=2ex] n42.north);\path[arrow1] ([xshift=-2ex] n43.north) -- node[left]{1}([xshift=-2ex] n41.south);\path[arrow2] ([xshift=2ex] n41.south) -- ([xshift=2ex] n43.north);\end{tikzpicture}
在导言区加几行代码
\usepackage{tikz}\usetikzlibrary{chains,scopes,positioning,backgrounds,shapes,fit,shadows,calc,arrows.meta}
去掉了默认的二叉树线条，重新用path画出路径