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…

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 t…

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…

这是“每个节点的右向指针”问题的进阶.如果给定的树可以是任何二叉树,该怎么办?你以前的解决方案仍然有效吗?注意:    你只能使用恒定的空间.例如,给定以下二叉树,         1       /  \      2    3     / \    \    4   5    7调用你的函数后,树应该看起来像这样:         1 -> NULL       /  \      2 -> 3 -> NULL     / \    \    4-> 5 -> 7 -&g…

原题地址 二叉树的层次遍历. 对于每一层,依次把各节点连起来即可. 代码: void connect(TreeLinkNode *root) { if (!root) return; queue<TreeLinkNode *> parents; parents.push(root); while (!parents.empty()) { queue<TreeLinkNode *> children; while (!parents.empty()) { TreeLinkNode *…

leetcode 199. Binary Tree Right Side View 这个题实际上就是把每一行最右侧的树打印出来,所以实际上还是一个层次遍历. 依旧利用之前层次遍历的代码,每次大的循环存储的是一行的节点,最后一个节点就是想要的那个节点 class Solution { public: vector<int> rightSideView(TreeNode* root) { vector<int> result; if(root == NULL) return resul…

[LeetCode]117. Populating Next Right Pointers in Each Node II 解题报告(Python) 标签: LeetCode 题目地址:https://leetcode.com/problems/populating-next-right-pointers-in-each-node-ii/description/ 题目描述: Follow up for problem "Populating Next Right Pointers in Each…

题目链接:Populating Next Right Pointers in Each Node II | LeetCode OJ 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 u…

https://leetcode.com/problems/populating-next-right-pointers-in-each-node-ii/ 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: Yo…