1. 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,…

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…

LeetCode:Populating Next Right Pointers in Each Node 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,…

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…

Populating Next Right Pointers in Each Node I 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 nex…

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…

每次应该把root同层的右侧节点传过来.如果没有,就传NULL. 同时,应该是先右后左. 感觉这次的代码还挺简洁的.. void construct(struct TreeLinkNode *root, struct TreeLinkNode *r_brother) { if(root == NULL) return; root->next = r_brother; construct(root->right,r_brother == NULL ? NULL : r_brother->l…

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…

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…

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