Flatten Binary Tree to Linked List
来源:互联网 发布:万方数据库官网登陆 编辑:程序博客网 时间:2024/06/06 08:27
Flatten Binary Tree to Linked List
Given a binary tree, flatten it to a linked list in-place.
For example,
Given
1 / \ 2 5 / \ \ 3 4 6The flattened tree should look like:
1 \ 2 \ 3 \ 4 \ 5 \ 6
click to show hints.
Hints:
If you notice carefully in the flattened tree, each node's right child points to the next node of a pre-order traversal.
/** * Definition for a binary tree node. * public class TreeNode { * int val; * TreeNode left; * TreeNode right; * TreeNode(int x) { val = x; } * } */public class Solution { TreeNode lastNode = null; public void flatten(TreeNode root) { if (root == null) return; if (lastNode != null) { lastNode.left = null; lastNode.right = root; } lastNode = root; TreeNode right = root.right; flatten(root.left); flatten(right); }}
0 0
- LeetCode: Flatten Binary Tree to Linked List
- LeetCode Flatten Binary Tree to Linked List
- LeetCode: Flatten Binary Tree to Linked List
- [Leetcode] Flatten Binary Tree to Linked List
- Flatten Binary Tree to Linked List
- [LeetCode] Flatten Binary Tree to Linked List
- Leetcode: Flatten Binary Tree to Linked List
- leetcode Flatten Binary Tree to Linked List
- LeetCode Flatten Binary Tree to Linked List
- Flatten Binary Tree to Linked List
- Flatten Binary Tree to Linked List
- LeetCode - Flatten Binary Tree to Linked List
- 【leetcode】Flatten Binary Tree to Linked List
- Flatten Binary Tree to Linked List
- [LeetCode]Flatten Binary Tree to Linked List
- Flatten Binary Tree to Linked List
- Flatten Binary Tree to Linked List
- Flatten Binary Tree to Linked List
- Xsolla和Hi-Rez工作室联手推行SMITE
- Android 小米盒子使用电视特性标签
- File类的基本操作
- preorder, inorder, postorder traversal
- CALayer 的简单使用
- Flatten Binary Tree to Linked List
- Fragment和Menu
- Linux-HA3.0版安装说明
- Construct Binary Tree from Preorder and Inorder Traversal
- 微软发布的Win10开发者指南视频
- udacity 之 android学习笔记:lesson 2
- Construct Binary Tree from Inorder and Postorder Traversal
- windows上GOROOT和GOPATH的设置
- udacity android学习笔记: lesson 3