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LeetCode--Reorder List
Given a singly linked list L: L0→L1→…→Ln-1→Ln, reorder it to: L0→Ln→L1→Ln-1→L2→Ln-2→… You must do this in-place without altering the nodes' values. For example, Given {1,2,3,4}, reorder it to ...
分类:其他好文   时间:2015-01-15 10:57:56    阅读次数:202
oracle单列索引和组合索引性能测试
共有两张表t1,t2t1的表结构t2的表结构t1和t2通过insertintot1values(‘www‘,‘aaa‘,‘bbb‘);insertintot1values(‘www1‘,‘aaa1‘,‘bbb1‘);insertintot1values(‘www2‘,‘aaa2‘,‘bbb2‘);insertintot1values(‘www3‘,‘aaa3‘,‘bbb3‘);t2同理构建insertintot1select*fromt1;insertintot2sel..
分类:数据库   时间:2015-01-15 01:51:54    阅读次数:330
[C++]LeetCode: 95 Binary Tree Preorder Traversal (先序遍历)
题目: Given a binary tree, return the preorder traversal of its nodes' values. For example: Given binary tree {1,#,2,3}, 1 2 / 3 return [1,2,3]. Note: Recursive...
分类:编程语言   时间:2015-01-14 22:59:13    阅读次数:174
[Leetcode]Unique Binary Search Trees
Givenn, how many structurally uniqueBST's(binary search trees) that store values 1...n?For example,Givenn= 3, there are a total of 5 unique BST's 1 .....
分类:其他好文   时间:2015-01-14 22:37:54    阅读次数:241
php 函数集介绍
php源代码之函数集介绍array_change_key_case — 返回字符串键名全为小写或大写的数组array_chunk — 将一个数组分割成多个array_combine — 创建一个数组,用一个数组的值作为其键名,另一个数组的值作为其值array_count_values — 统计数组中...
分类:Web程序   时间:2015-01-14 21:19:15    阅读次数:362
ASP.NET Web API 数据验证
第一种方式单独为每一个Action做验证 // POST api/values public HttpResponseMessage Post([FromBody]UserInfo userInfo) { if (string.Is...
分类:Windows程序   时间:2015-01-14 19:50:33    阅读次数:213
LeetCode--Path Sum
Given a binary tree and a sum, determine if the tree has a root-to-leaf path such that adding up all the values along the path equals the given sum. For example: Given the below binary tree and sum ...
分类:其他好文   时间:2015-01-14 16:58:45    阅读次数:167
[C++]LeetCode: 92 Unique Binary Search Trees II
题目: Given n, generate all structurally unique BST's (binary search trees) that store values 1...n. For example, Given n = 3, your program should return all 5 unique BST's shown below. 1 ...
分类:编程语言   时间:2015-01-14 16:58:27    阅读次数:222
LeetCode--Binary Tree Level Order Traversal II
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}, ...
分类:其他好文   时间:2015-01-14 15:36:13    阅读次数:127
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