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LeetCode[Tree]: Binary Tree Zigzag Level Order Traversal
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). For example: Given binary tr...
分类:其他好文   时间:2014-12-26 16:46:08    阅读次数:159
LeetCode: Binary Tree Level Order Traversal 解题报告
Binary Tree Level Order TraversalGiven a binary tree, return the level order traversal of its nodes' values. (ie, from left to right, level by level)....
分类:其他好文   时间:2014-12-22 21:05:37    阅读次数:102
03-3. Tree Traversals Again (25)
03-3. Tree Traversals Again (25)An inorder binary tree traversal can be implemented in a non-recursive way with a stack. For example, suppose that whe...
分类:其他好文   时间:2014-12-22 19:14:51    阅读次数:188
【LeetCode】Binary Tree Inorder Traversal
题目 Given a binary tree, return the inorder traversal of its nodes' values. For example: Given binary tree {1,#,2,3}, 1 2 / 3 return [1,3,2]. 解答 中序遍历二叉树。 递归法...
分类:其他好文   时间:2014-12-21 15:20:58    阅读次数:178
Binary Tree Postorder Traversal
先简单介绍下先序遍历、中序遍历和后序遍历,先序遍历为ABC,中序遍历为BAC,后续遍历为BCA,根节点在的位置决定了什么遍历。该题的递归解法:class Solution {public: typedef TreeNode * STreeNode; vector buf; vector pos...
分类:其他好文   时间:2014-12-20 19:36:13    阅读次数:178
03-3. Tree Traversals Again (25)
03-3. Tree Traversals Again (25) 时间限制 200 ms 内存限制 65536 kB 代码长度限制 8000 B 判题程序 Standard 作者 CHEN, Yue An inorder binary tree traversal can ...
分类:其他好文   时间:2014-12-20 14:19:10    阅读次数:150
Leetcode: Binary Tree Preorder Traversal
这道题一共有三道解法:其中第二种解法,我参考了迭代器的写法,写了一个迭代器的类。重载了前++和—>操作符,但是这个解法会造成内存的超限,很奇怪,解法1:递归解法: 1 class Solution { 2 public: 3 vector result; 4 vector preor...
分类:其他好文   时间:2014-12-20 12:57:22    阅读次数:198
【LeetCode】Binary Tree Level Order Traversal II
题目 Given a binary tree, return the bottom-up level order traversal of its nodes' values. (ie, from left to right, level by level from leaf to root). For example: Given binary tree {3,9,20,#,#...
分类:其他好文   时间:2014-12-19 17:30:36    阅读次数:172
【LeetCode】Binary Tree Level Order Traversal
题目 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}, 3 / ...
分类:其他好文   时间:2014-12-19 17:30:08    阅读次数:167
Binary Tree Inorder Traversal
Given a binary tree, return the inorder traversal of its nodes' values. For example: Given binary tree {1,#,2,3}, 1 2 / 3 return [1,3,2]. Note: Recursive solutio...
分类:其他好文   时间:2014-12-19 12:17:50    阅读次数:147
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