++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 给定一个二叉树 struct TreeLinkNode { TreeLinkNode *left; TreeLinkNode *right; TreeLinkNode *next; } 填入每个节点的next指针,如果没有右边的节点,那么这个next指针设置为NULL. 初始时候所有歌next指针都设置成NULL. Note: 空间…

2018-08-09 16:01:40 一.Populating Next Right Pointers in Each Node 问题描述: 问题求解: 由于是满二叉树,所以很好填充. public void connect(TreeLinkNode root) { if (root != null) { if (root.left != null) root.left.next = root.right; if (root.right != null && root.next != n…

本质上是二叉树的层次遍历,遍历层次的过程当中把next指针加上去. ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 和问题"Populating Next Right Pointers in Each Node"类似. 如果给定的树是任意的二叉树,你先前的方法还能工作吗? 笔记: 你只能用常量的辅助空间. 例如给定的是羡慕的二叉树, 1 / \ 2 3 / \ \ 4…

作者: 负雪明烛 id: fuxuemingzhu 个人博客:http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 递归 日期 题目地址:https://leetcode.com/problems/populating-next-right-pointers-in-each-node/description/ 题目描述 给定一个完美二叉树,其所有叶子节点都在同一层,每个父节点都有两个子节点.二叉树定义如下: struct Node { int val; Node *…

问题 给出如下结构的二叉树: struct TreeLinkNode { TreeLinkNode *left; TreeLinkNode *right; TreeLinkNode *next; } 填充每一个next指针使其指向自己的右边邻居节点.如果没有右边的邻居节点,next指针须设成NULL. 在开始时,所有的next指针被初始化成NULL. 注意: 你只能使用常数级别的额外空间 你可以假设该树为完全二叉树(即所有叶子节点都在同一层,而且每个父节点都有两个子节点). 例如,给出如下完全二…

Follow up for problem "Populating Next Right Pointers in Each Node". What if the given tree could be any binary tree? Would your previous solution still work? Note: You may only use constant extra space. For example,Given the following binary tr…

Given a binary tree struct TreeLinkNode { TreeLinkNode *left; TreeLinkNode *right; TreeLinkNode *next; } Populate each next pointer to point to its next right node. If there is no next right node, the next pointer should be set to NULL. Initially, al…

You are given a perfect binary tree where all leaves are on the same level, and every parent has two children. The binary tree has the following definition: struct Node { int val; Node *left; Node *right; Node *next; } Populate each next pointer to p…

Follow up for problem "Populating Next Right Pointers in Each Node". What if the given tree could be any binary tree? Would your previous solution still work? Note: You may only use constant extra space. For example,Given the following binary tr…

Follow up for problem "Populating Next Right Pointers in Each Node". What if the given tree could be any binary tree? Would your previous solution still work? Note: You may only use constant extra space. For example,Given the following binary tr…