return its level order traversal as: [ [3], [9,20], [15,7] ] SOLUTION 1: 使用队列来解决,很直观。注意在每次换层的时候,新建一个List. 1/**2* Definition for binary tree3* public class TreeNode {4* int val;5* TreeNode left;6* TreeNode right;7* TreeNode(int x) { val = x; ...
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...
* TreeNode(int x) : val(x), left(NULL), right(NULL) {} * };*/structNode { TreeNode*tNode;intlevel; Node(TreeNode* newtNode,intnewlevel): tNode(newtNode), level(newlevel) {} };classSolution {public: vector<vector<int> > levelOrderBottom(TreeNode *root) { vector<vector<int> ...
Given a binary tree, return the zigzag level order traversal of its nodes' values. (ie, from left to right, then right to left for the next level and alternate between). 给出一棵二叉树,返回其节点值的锯齿形层次遍历(先从左往右,下一层再从右往左,层与层之间交替进行) 【题目链接】 www.li...
题目描述英文版描述Given the root of a binary tree, return the level order traversal of its nodes' values. (i.e., from left to right, level by level). Example 1: Input: root = [3,9,20,null,null,1…
push(NULL); 29 int nLevelCount = 1; 30 while (true) { 31 TreeNode *pTemp = tree_queue.front(); 32 tree_queue.pop(); 33 if (pTemp == NULL) { 34 if (nLevelCount%2 == 0) { //if the num of level is odd, swap the ivec; 35 Swap(ivec); 36 } 37 tree_vector.push_...
Binary Tree Level Order Traversal(二叉树的层次遍历) HoneyMoose iSharkFly - 鲨鱼君 来自专栏 · Java 描述给出一棵二叉树,返回其节点值的层次遍历(逐层从左往右访问)样例给一棵二叉树 {3,9,20,#,#,15,7}:3 / \ 9 20 / \ 15 7返回他的分层遍历结果:[ [3], [9,20], [15,7] ]挑战挑战1...
return its bottom-up level order traversal as: [ [15,7], [9,20], [3] ] 1. 2. 3. 4. 5. # Definition for a binary tree node. # class TreeNode(object): # def __init__(self, x): # self.val = x # self.left = None ...
【题目描述】 Given a binary tree, return the level order traversal of its nodes' values. (ie, from left to right, level by level). 给出一棵二叉树,返回其节点值的层次遍历(逐层从左往右访问) 【题目链接】 www.lintcode.com/en/problem/binary-tree-level-order-traversal/ ...
描述: 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,#,#,15,7}, return its level order trav...