Backups/CS-Notes
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

auto commit

Browse Source
This commit is contained in:
CyC2018
2019-11-02 17:33:10 +08:00
parent 906d2ff2f9
commit 23d7c89fbe
319 changed files with 803 additions and 803 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
notes/7. 重建二叉树.md
View File

@ -7,13 +7,13 @@
根据二叉树的前序遍历和中序遍历的结果，重建出该二叉树。假设输入的前序遍历和中序遍历的结果中都不含重复的数字。
<div align="center"> <img src="pics/31d9adce-2af8-4754-8386-0aabb4e500b0.png" width="300"/> </div><br>
<div align="center"> <img src="https://cs-notes-1256109796.cos.ap-guangzhou.myqcloud.com/31d9adce-2af8-4754-8386-0aabb4e500b0.png" width="300"/> </div><br>
## 解题思路
前序遍历的第一个值为根节点的值，使用这个值将中序遍历结果分成两部分，左部分为树的左子树中序遍历结果，右部分为树的右子树中序遍历的结果。
<div align="center"> <img src="pics/c269e362-1128-4212-9cf3-d4c12b363b2f.gif" width="330px"> </div><br>
<div align="center"> <img src="https://cs-notes-1256109796.cos.ap-guangzhou.myqcloud.com/c269e362-1128-4212-9cf3-d4c12b363b2f.gif" width="330px"> </div><br>
```java
// 缓存中序遍历数组每个值对应的索引
@ -42,4 +42,4 @@ private TreeNode reConstructBinaryTree(int[] pre, int preL, int preR, int inL) {
<div align="center"><img width="320px" src="https://cs-notes-1256109796.cos.ap-guangzhou.myqcloud.com/githubio/公众号二维码-1.png"></img></div>
<div align="center"><img width="320px" src="https://cs-notes-1256109796.cos.ap-guangzhou.myqcloud.com/githubio/公众号二维码-2.png"></img></div>