return its level order traversal as: [ [3], [9,20], [15,7] ] OJ's Binary Tree Serialization: The serialization of a binary tree follows a level order traversal, where '#' signifies a path terminator where no node exists below. Here's an example: 1 / \ 2 3 / 4 \ 5 The abov...
}private:voidlevelOrder(TreeNode* root,intcurrLevel) {if(root == NULL)return;if(res.empty() || currLevel > (res.size() -1)) res.push_back(vector<int>()); res[currLevel].push_back(root->val); levelOrder(root->left, currLevel +1); levelOrder(root->right, currLevel +1); } ...
Given a binary tree, return the level order traversal of its nodes' values. (ie, from left to right, level by level). For example: Given binary tree [3,9,20,null,null,15,7], 代码语言:javascript 代码运行次数:0 运行 AI代码解释 3/\920/\157 return its level order traversal as: 代码...
leetcode429. N-ary Tree Level Order Traversal Given an n-ary tree,returnthe level order traversalits nodes' valueslevel by levelFor examplegiven a3-ary tree: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 We shouldreturnits level order traversal:[[1],[3,2,4],[5,6]]Note:The depth...
Given a binary tree, return thebottom-up level ordertraversal of its nodes' values. (ie, from left to right, level by level from leaf to root). For example: Given binary tree{3,9,20,#,#,15,7}, 3 / \ 9 20 / \ 15 7
https://leetcode.cn/problems/binary-tree-level-order-traversal/ 给你二叉树的根节点 root ,返回其节点值的 层序遍历 。 (即逐层地,从左到右访问所有节点)。 示例1: 输入:root = [3,9,20,null,null,15,7] 输出:[[3],[9,20],[15,7]] class Solution { public: vector<vector<int>> levelOr...
题意描述 给定一个二叉树,返回其节点值的层数顺序遍历。 (即,从左到右,逐级)。 测试用例 Given binary tree , return its level order traversal as: 解题思路 一、思路一 使用递归,根据树深度判断节点值应该添加入集合的哪个位置。 二、思路二 使
107Binary Tree Level Order Traversal IIC++ 106Construct Binary Tree from Inorder and Postorder TraversalC 105Construct Binary Tree from Preorder and Inorder TraversalC 104Maximum Depth of Binary TreeC 103Binary Tree Zigzag Level Order TraversalC++ ...
102 Binary Tree Level Order Traversal 29.30% Easy 101 Symmetric Tree 31.60% Easy 100 Same Tree 41.80% Easy 99 Recover Binary Search Tree 24.30% Hard 98 Validate Binary Search Tree 20.60% Medium 97 Interleaving String 20.80% Hard 96 Unique Binary Search Trees 36.00% Medium 95 Unique Binary Sear...
Binary Tree Level Order Traversal (easy) Reverse Level Order Traversal (easy) Zigzag Traversal (medium) Level Averages in a Binary Tree (easy) Minimum Depth of a Binary Tree (easy) Level Order Successor (easy) Connect Level Order Siblings (medium) 8. Pattern: Tree Depth First Search,树上的...