Given a binary tree,returnthe values of its boundary in anti-clockwise direction starting from root. Boundary includes left boundary, leaves, and right boundary in order without duplicate nodes. Left boundary is defined as the path from root to the left-most node. Right boundary is defined as ...
Given a binary tree, return the values of its boundary in anti-clockwise direction starting from root. Boundary includes left boundary, leaves, and right boundary in order without duplicate nodes. Left boundary is defined as the path from root to the left-most node. Right boundary is defined ...
LeetCode 236. Lowest Common Ancestor of a Binary Tree 这道题和上一道求解最低公共祖先的不同在于是一般的二叉树,只能遍历节点来获取信息 通过返回节点是否为空判定子树中是否有pq节点 三种情况 p和q分别在两颗子树中:那么当前节点就是最低公共祖先 p和q都在左子树:将问题转换为在当前节点的左子树找p和q的...
[Leetcode] 545. Boundary of Binary Tree 二叉树的边界 思路There are three parts in the result, left boundary, right boundary, and leaf nodes. left boundary and right boundary can use a while loop from root till the leaf. For leaf nodes, we can not use com...Matlab 判断点是否在凸...
【Leetcode】545. Boundary of Binary Tree 1对boundary理解有误,比如左边的boundary,要是子树中没有左子树,右子树的点也是bounday的;同理右boundary也一样 2 root直接单独处理会简单些
[Leetcode] 545. Boundary of Binary Tree 二叉树的边界 思路There are three parts in the result, left boundary, right boundary, and leaf nodes. left boundary and right boundary can use a while loop from root till the leaf. For leaf nodes, we can not use com...Matlab 判断点是否在凸...
LeetCode 545. Boundary of Binary Tree 原题链接在这里:https://leetcode.com/problems/boundary-of-binary-tree/description/ 题目: Given a binary tree, return the values of its boundary in anti-clockwise direction starting from root. Boundary includes left boundary, leaves, and right boundary in ...
vector<int> boundaryOfBinaryTree(TreeNode*root) {if(!root)return{}; vector<int>res, right; TreeNode*l = root->left, *r = root->right, *p =root;if(root->left || root->right) res.push_back(root->val);while(l && (l->left || l->right)) { ...