https://leetcode.com/problems/binary-tree-postorder-traversal/ Given a binary tree, return thepostordertraversal of its nodes' values. For example: Given binary tree{1,#,2,3}, 1 \ 2 / 3 return[3,2,1]. Note:Recursive solution is trivial, could you do it iteratively? 后续遍历二叉树,...
https://leetcode.com/problems/binary-tree-inorder-traversal/description/ 94. Binary Tree Inorder Traversal Given a binary tree, return the inorder traversal of its nodes' values. Example: Input: [1,null,2,3]1\2 / 3Output: [1,3,2] Follow up: Recursive solution is trivial, could you ...
Go 语言递归实现 /** * Definition for a binary tree node. * type TreeNode struct { * Val int * Left *TreeNode * Right *TreeNode * } */ func binaryTreePaths(root *TreeNode) []string { var res []string if root == nil { return res } dfs(root, "", &res) return res } fun...
* Definition for a binary tree node. * type TreeNode struct { * Val int * Left *TreeNode * Right *TreeNode * } */ // 黄哥Python培训 黄哥所写 func rightSideView(root *TreeNode) []int { if root == nil { return []int{} } var res []int queue := [][]interface{}{{root,...
Can you solve this real interview question? Linked List in Binary Tree - Given a binary tree root and a linked list with head as the first node. Return True if all the elements in the linked list starting from the head correspond to some downward path
Can you solve this real interview question? Second Minimum Node In a Binary Tree - Given a non-empty special binary tree consisting of nodes with the non-negative value, where each node in this tree has exactly two or zero sub-node. If the node has two s
LeetCode Top 100 Liked Questions 236. Lowest Common Ancestor of a Binary Tree (Java版; Medium) 题目描述 Given a binary tree, find the lowest common ancestor (LCA) of two given nodes in the tree. According to the definition of LCA on Wikipedia: “The lowest common ancestor is defined betw...
中等 96. 不同的二叉搜索树 71.5% 中等 98. 验证二叉搜索树 39.3% 中等 99. 恢复二叉搜索树 61.3% 中等 100. 相同的树 63.2% 简单 101. 对称二叉树 62.3% 简单 102. 二叉树的层序遍历 69.7% 中等 103. 二叉树的锯齿形层序遍历 60.2% 中等 104. 二叉树的最大深度 78.6% 简单 105. 从前序与中序遍历...
145. 二叉树的后序遍历 - 给你一棵二叉树的根节点 root ,返回其节点值的 后序遍历 。 示例 1: 输入:root = [1,null,2,3] 输出:[3,2,1] 解释: [https://assets.leetcode.com/uploads/2024/08/29/screenshot-2024-08-29-202743.png] 示例 2: 输入:root =
** Inorder Traversal: left -> root -> right ** Preoder Traversal: root -> left -> right ** Postoder Traveral: left -> right -> root 记忆方式:order的名字指的是root在什么位置。left,right的相对位置是固定的。 图片来源:https://leetcode.com/articles/binary-tree-right-side-view/ ...