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[leetcode]_Binary Tree Inorder Traversal
题目:二叉树的中序遍历。思路:用递归来写中序遍历非常简单。但是题目直接挑衅说,----->"Recursive solution is trivial"。好吧。谁怕谁小狗。递归代码: 1 List inOrder = new ArrayList(); 2 3 public ...
分类:其他好文   时间:2014-06-29 12:55:36    阅读次数:176
Construct Binary Tree from Preorder and Inorder Traversal
题目 Given preorder and inorder traversal of a tree, construct the binary tree. Note: You may assume that duplicates do not exist in the tree. 方法 根据树的中序遍历和前序遍历,来构造树,使用递归的思想。 Tre...
分类:其他好文   时间:2014-06-20 12:14:49    阅读次数:262
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]. Note: Recur...
分类:其他好文   时间:2014-06-20 10:22:00    阅读次数:221
LeetCode: Binary Tree Level Order Traversal II [107]
【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,#,#,15,7}, 3 / 9 20 / 15 7 return its b...
分类:其他好文   时间:2014-06-20 09:42:30    阅读次数:224
CSS3 Transitions 你可能不知道的知识点
如何临时让transition失效我们给一个element设置了transition效果,但某些特殊情况,我们希望让transition临时失效。我们第一反应就是先移除transition设置,等其他属性设置完成之后再还原transition设置。但浏览器有时候会让我们感觉事与愿违看下面这段代码,你...
分类:Web程序   时间:2014-06-11 08:26:24    阅读次数:407
【leetcode】Construct Binary Tree from Preorder and Inorder Traversal
问题: 给定二叉树的前序和中序遍历,重构这课二叉树. 分析: 前序、中序、后序都是针对于根结点而言,所以又叫作先根、中根、后根(当然不是高跟)。 前序:根  左 右 中序:左  根 右 对二叉树,我们将其进行投影,就会发现个有趣的事: 发现投影后的顺序,恰好是中序遍历的顺序,这也就是为什么在构造二叉树的时候,一定需要知道中序遍历,因为中序遍历决定了结点间的相对左右位置关系。所...
分类:其他好文   时间:2014-06-08 15:20:12    阅读次数:214
LeetCode: Best Time to Buy and Sell Stock [121]
【题目】 Say you have an array for which the ith element is the price of a given stock on day i. If you were only permitted to complete at most one transaction (ie, buy one and sell one share of the stock), design an algorithm to find the maximum profit. ...
分类:其他好文   时间:2014-06-08 15:11:58    阅读次数:298
【leetcode】Construct Binary Tree from Inorder and Postorder Traversal
问题: 由中序和后序遍历构造二叉树。 分析: Construct Binary Tree from Preorder and Inorder Traversal //实现 TreeNode *addNode(vector &inorder, int s1, int end1, vector &postorder, int s2, int end2) { ...
分类:其他好文   时间:2014-06-08 09:56:52    阅读次数:206
【LeetCode】Single Number (2 solutions)
Single NumberGiven an array of integers, every element appearstwiceexcept for one. Find that single one.Note:Your algorithm should have a linear runti...
分类:其他好文   时间:2014-06-07 23:44:39    阅读次数:302
Construct Binary Tree from Inorder and Postorder Traversal
题目 Given inorder and postorder traversal of a tree, construct the binary tree. Note: You may assume that duplicates do not exist in the tree. 方法 根据树的中序遍历和后序遍历,来恢复树,使用递归的思想。 Tr...
分类:其他好文   时间:2014-06-07 14:50:37    阅读次数:231
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