剑指Offer-序列化反序列化二叉树

た入场券 2022-05-22 04:42 198阅读 0赞

## 转自[http://cuijiahua.com/blog/2018/01/basis\_61.html][http_cuijiahua.com_blog_2018_01_basis_61.html] ##

## 一、前言 ##

本系列文章为《[剑指Offer][Offer]》刷题笔记。

刷题平台：[牛客网][Link 1]

书籍下载：[共享资源][Link 2]

## 二、题目 ##

请实现两个函数，分别用来序列化和反序列化[二叉树][Link 3]。

### 1、思路 ###

这道题思路简单，使用前序遍历来序列化和发序列化即可。只要自己写的程序格式对应上即可。可以使用$符号表示NULL，同时每个结点之间，需要添加逗号，即','进行分隔。

直接看代码即可。

### 2、代码 ###

C++

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      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(117,113,94);">// 把str流中转换为字符串返回</span> 
     </div> 
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      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(117,113,94);">// 把str流中转换为字符串返回</span> 
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      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(166,226,45);">char</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">*</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">str</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">)</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">{ </span> 
     </div> 
     <div style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px 5px;vertical-align:baseline;height:inherit;"> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(102,217,239);">if</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">(</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">!</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">str</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">)</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">{ </span> 
     </div> 
     <div style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px 5px;vertical-align:baseline;background:0px center;height:inherit;"> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(102,217,239);">return</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(166,226,45);">NULL</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">;</span> 
     </div> 
     <div style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px 5px;vertical-align:baseline;height:inherit;"> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">}</span> 
     </div> 
     <div style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px 5px;vertical-align:baseline;background:0px center;height:inherit;"> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">TreeNode</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">*</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">res</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">=</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(249,38,80);">DeserializeCore</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">(</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">&amp;str</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">)</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">;</span> 
     </div> 
     <div style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px 5px;vertical-align:baseline;height:inherit;"> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(102,217,239);">return</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">res</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">;</span> 
     </div> 
     <div style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px 5px;vertical-align:baseline;background:0px center;height:inherit;"> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);">&nbsp;&nbsp;&nbsp;&nbsp;</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">}</span> 
     </div> 
     <div style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px 5px;vertical-align:baseline;height:inherit;"> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);">&nbsp;&nbsp;&nbsp;&nbsp;</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(166,226,45);">void</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(249,38,80);">SerializeCore</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">(</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">TreeNode</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">*</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">root</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">,</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(166,226,45);">string</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">&amp;</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">str</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">)</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">{ </span> 
     </div> 
     <div style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px 5px;vertical-align:baseline;background:0px center;height:inherit;"> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(117,113,94);">// 如果指针为空，表示左子节点或右子节点为空，则在序列中用#表示</span> 
     </div> 
     <div style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px 5px;vertical-align:baseline;height:inherit;"> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(102,217,239);">if</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">(</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">!</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">root</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">)</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">{ </span> 
     </div> 
     <div style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px 5px;vertical-align:baseline;background:0px center;height:inherit;"> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">str</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">+=</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(230,219,93);">'#'</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">;</span> 
     </div> 
     <div style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px 5px;vertical-align:baseline;height:inherit;"> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(102,217,239);">return</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">;</span> 
     </div> 
     <div style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px 5px;vertical-align:baseline;background:0px center;height:inherit;"> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">}</span> 
     </div> 
     <div style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px 5px;vertical-align:baseline;height:inherit;"> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(166,226,45);">string</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">tmp</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">=</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(249,38,80);">to_string</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">(</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">root</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">-&gt;</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">val</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">)</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">;</span> 
     </div> 
     <div style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px 5px;vertical-align:baseline;background:0px center;height:inherit;"> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">str</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">+=</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">tmp</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">;</span> 
     </div> 
     <div style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px 5px;vertical-align:baseline;height:inherit;"> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(117,113,94);">// 加逗号，用于区分每个结点</span> 
     </div> 
     <div style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px 5px;vertical-align:baseline;background:0px center;height:inherit;"> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">str</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">+=</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(230,219,93);">','</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">;</span> 
     </div> 
     <div style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px 5px;vertical-align:baseline;height:inherit;"> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(249,38,80);">SerializeCore</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">(</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">root</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">-&gt;</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">left</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">,</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">str</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">)</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">;</span> 
     </div> 
     <div style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px 5px;vertical-align:baseline;background:0px center;height:inherit;"> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(249,38,80);">SerializeCore</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">(</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">root</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">-&gt;</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">right</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">,</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">str</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">)</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">;</span> 
     </div> 
     <div style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px 5px;vertical-align:baseline;height:inherit;"> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);">&nbsp;&nbsp;&nbsp;&nbsp;</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">}</span> 
     </div> 
     <div style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px 5px;vertical-align:baseline;background:0px center;height:inherit;"> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);">&nbsp;&nbsp;&nbsp;&nbsp;</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(117,113,94);">// 递归时改变了str值使其指向后面的序列，因此要声明为char**</span> 
     </div> 
     <div style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px 5px;vertical-align:baseline;height:inherit;"> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);">&nbsp;&nbsp;&nbsp;&nbsp;</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">TreeNode</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">*</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(249,38,80);">DeserializeCore</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">(</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(166,226,45);">char</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">*</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">*</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">str</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">)</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">{ </span> 
     </div> 
     <div style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px 5px;vertical-align:baseline;background:0px center;height:inherit;"> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(117,113,94);">// 到达叶节点时，调用两次，都返回null，所以构建完毕，返回父节点的构建</span> 
     </div> 
     <div style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px 5px;vertical-align:baseline;height:inherit;"> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(102,217,239);">if</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">(</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">*</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">*</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">str</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">==</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(230,219,93);">'#'</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">)</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">{ </span> 
     </div> 
     <div style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px 5px;vertical-align:baseline;background:0px center;height:inherit;"> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">(</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">*</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">str</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">)</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">++</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">;</span> 
     </div> 
     <div style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px 5px;vertical-align:baseline;height:inherit;"> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(102,217,239);">return</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(166,226,45);">NULL</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">;</span> 
     </div> 
     <div style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px 5px;vertical-align:baseline;background:0px center;height:inherit;"> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">}</span> 
     </div> 
     <div style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px 5px;vertical-align:baseline;height:inherit;"> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(117,113,94);">// 因为整数是用字符串表示，一个字符表示一位，先进行转换</span> 
     </div> 
     <div style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px 5px;vertical-align:baseline;background:0px center;height:inherit;"> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(166,226,45);">int</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">num</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">=</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(174,129,255);">0</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">;</span> 
     </div> 
     <div style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px 5px;vertical-align:baseline;height:inherit;"> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(102,217,239);">while</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">(</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">*</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">*</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">str</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">!=</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(230,219,93);">','</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">&amp;&amp;</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">*</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">*</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">str</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">!=</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(230,219,93);">'\0'</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">)</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">{ </span> 
     </div> 
     <div style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px 5px;vertical-align:baseline;background:0px center;height:inherit;"> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">num</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">=</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">num</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">*</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(174,129,255);">10</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">+</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">(</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">(</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">*</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">*</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">str</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">)</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">-</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(230,219,93);">'0'</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">)</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">;</span> 
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     <div style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px 5px;vertical-align:baseline;height:inherit;"> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">(</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">*</span> 
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      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">)</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">++</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">;</span> 
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     <div style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px 5px;vertical-align:baseline;background:0px center;height:inherit;"> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">}</span> 
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     <div style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px 5px;vertical-align:baseline;height:inherit;"> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">TreeNode</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">*</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">root</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">=</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(102,217,239);">new</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(0,111,224);"> </span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(249,38,80);">TreeNode</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">(</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">num</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">)</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">;</span> 
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     <div style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px 5px;vertical-align:baseline;background:0px center;height:inherit;"> 
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      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;color:rgb(230,219,93);">'\0'</span> 
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      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">root</span> 
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      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">left</span> 
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      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">root</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">-&gt;</span> 
      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">right</span> 
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     </div> 
     <div style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px 5px;vertical-align:baseline;background:0px center;height:inherit;"> 
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      <span style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px;vertical-align:baseline;height:inherit;">root</span> 
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     <div style="border:0px;font-family:inherit;font-style:inherit;margin:0px;padding:0px 5px;vertical-align:baseline;height:inherit;"> 
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     </div> 
    </div></td> 
  </tr> 
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</table>

[http_cuijiahua.com_blog_2018_01_basis_61.html]: http://cuijiahua.com/blog/2018/01/basis_61.html
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[Link 1]: http://cuijiahua.com/wp-content/themes/begin/inc/go.php?url=http://www.cuijiahua.com/wp-content/themes/begin/inc/go.php?url=https://www.nowcoder.com/ta/coding-interviews?query=&asc=true&order=&page=1
[Link 2]: http://cuijiahua.com/wp-content/themes/begin/inc/go.php?url=http://www.cuijiahua.com/resource.html
[Link 3]: http://cuijiahua.com/blog/tag/%E4%BA%8C%E5%8F%89%E6%A0%91/