[LeetCode] 103. Binary Tree Zigzag Level Order Traversal _ Medium tag: BFS
Givenabinarytree,returnthe zigzaglevelorder traversalofitsnodes'values.(ie,fromlefttoright,thenrighttoleftforthenextlevelandalternatebetween).Forexamp...
[leetcode]103. Binary Tree Zigzag Level Order Traversal二叉树来回遍历
Givenabinarytree,returnthe zigzaglevelorder traversalofitsnodes'values.(ie,fromlefttoright,thenrighttoleftforthenextlevelandalternatebetween).Forexamp...
Leetcode#103 Binary Tree Zigzag Level Order Traversal
原题地址基本数据结构操作,二叉树的层次遍历。代码:vector<vector<int>>zigzagLevelOrder(TreeNode*root){vector<vector<int>>res;vector<TreeNode*>laye...
LeetCode 103. 二叉树的锯齿形层次遍历(Binary Tree Zigzag Level Order Traversal)
103.二叉树的锯齿形层次遍历103.BinaryTreeZigzagLevelOrderTraversal题目描述给定一个二叉树,返回其节点值的锯齿形层次遍历。(即先从左往右,再从右往左进行下一层遍历,以此类推,层与层之间交替进行)。LeetCode103.BinaryTreeZigzagLeve...
Java for LeetCode 103 Binary Tree Zigzag Level Order Traversal
Givenabinarytree,returnthezigzaglevelordertraversalofitsnodes'values.(ie,fromlefttoright,thenrighttoleftforthenextlevelandalternatebetween).Forexample...
Binary Tree Postorder Traversal
Givenabinarytree,returnthe postorder traversalofitsnodes'values.Forexample:Givenbinarytree {1,#,2,3},1\2/3return [3,2,1]./***Definitionforabinarytreen...
leetcode 144. Binary Tree Preorder Traversal ----- java
Givenabinarytree,returnthe preorder traversalofitsnodes'values.Forexample:Givenbinarytree {1,#,2,3},1\2/3return [1,2,3].Note: Recursivesolutionistrivi...
Binary Tree Level Order Traversal,Binary Tree Level Order Traversal II
BinaryTreeLevelOrderTraversalTotalAccepted: 79463 TotalSubmissions: 259292 Difficulty: EasyGivenabinarytree,returnthe levelorder traversalofitsnodes'v...
[LeetCode] questions conlusion_InOrder, PreOrder, PostOrder traversal
Pre:node先, Inorder: nodein, Postorder: node最后PreOrderInorderPostOrdernode->left->rightleft->node->rightleft->right -&g...
[LeetCode] 103. Binary Tree Zigzag Level Order Traversal 二叉树的之字形层序遍历
Givenabinarytree,returnthe zigzaglevelorder traversalofitsnodes'values.(ie,fromlefttoright,thenrighttoleftforthenextlevelandalternatebetween).Forexamp...
Binary Tree Level Order Traversal II 解题思路
思路:与BinaryTreeLevelOrderTraversalI 几乎一样。只是最后将结果存放在栈里,然后在栈里再传给向量即可。再次总结思路:两个queue,先把第一个放进q1,循环q1是否为空,不为空就读取并出列,如果root有孩子就放入q2,最后清空q2。注意:for循环的时候不要使用vec...
[Algorithm] 94. Binary Tree Inorder Traversal iteratively ap
Givenabinarytree,returnthe inorder traversalofitsnodes‘values.Example:Input:[1,null,2,3]12/3Output:[1,3,2]Followup: Recursivesolutionistrivial,couldyo...
[LeetCode]题解(python):107 Binary Tree Level Order Traversal II
题目来源https://leetcode.com/problems/binary-tree-level-order-traversal-ii/Givenabinarytree,returnthe bottom-uplevelorder traversalofitsnodes'values.(ie,f...
Algorithm | Tree traversal
Therearethreetypesofdepth-firsttraversal:pre-order,in-order,andpost-order.Forabinarytree,theyaredefinedasoperationsrecursivelyateachnode,startingwitht...
lintcode :Binary Tree Preorder Traversal 二叉树的前序遍历
题目:二叉树的前序遍历给出一棵二叉树,返回其节点值的前序遍历。样例给出一棵二叉树 {1,#,2,3},1\2/3返回 [1,2,3].挑战你能使用非递归实现么?解题:通过递归实现,根节点->左节点->右节点Java程序:/***DefinitionofTreeNode:*publiccl...
leecode 每日解题思路 102-Binary Tree Level Order Traversal
題目描述:题目链接: 102-BinaryTreeLevelOrderTraversal这个问题要解决的是如何逐层遍历一个二叉树,并把同一层元素放入同一list中,再将所有元素返回。其实当时我的第一个反应就是树类型的题目已经做了好多了,无非用来用去就是递归,或者队列,那如何解决这个问题呢?先观察:我...
[LeetCode 题解]: Binary Tree Preorder Traversal
前言 【LeetCode题解】系列传送门: http://www.cnblogs.com/double-win/category/573499.html 1.题目描述Givenabinarytree,returnthepreordertraversalofitsnodes'values.Forexa...
LeetCode 105. Construct Binary Tree from Preorder and Inorder Traversal (用先序和中序树遍历来建立二叉树)
Givenpreorderandinordertraversalofatree,constructthebinarytree.Note:Youmayassumethatduplicatesdonotexistinthetree.题目标签:Array,Tree题目给了我们preOrder和inOrde...
leetcode 103 Binary Tree Zigzag Level Order Traversal ----- java
Givenabinarytree,returnthe zigzaglevelorder traversalofitsnodes'values.(ie,fromlefttoright,thenrighttoleftforthenextlevelandalternatebetween).Forexamp...
lintcode:Matrix Zigzag Traversal 矩阵的之字型遍历
题目:矩阵的之字型遍历给你一个包含 m x n 个元素的矩阵(m 行, n 列),求该矩阵的之字型遍历。样例对于如下矩阵:[[1,2,3,4],[5,6,7,8],[9,10,11,12]]返回 [1,2,5,9,6,3,4,7,10,11,8,12]解题:感觉很简单,就是没有搞出来,程序来源 ,这...