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Binary Tree Zigzag Level Order Traversal——LeetCode
Given a binary tree, return thezigzag level ordertraversal of its nodes' values. (ie, from left to right, then right to left for the next level and al...
分类:其他好文   时间:2015-04-21 22:08:41    阅读次数:165
[LeetCode] Valid Parentheses
Valid Parentheses Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. The brackets must close in the correct order, "()" an...
分类:其他好文   时间:2015-04-21 20:46:55    阅读次数:128
支付宝 sdk
下载地址:?https://b.alipay.com/order/productDetail.htm?productId=2013080604609654&tabId=4#ps-tabinfo-hash...
分类:其他好文   时间:2015-04-21 18:50:13    阅读次数:111
Play常用代码片段 http://www.anool.net/?p=625
持续更新中:(1)按照降序查询:List entities= Entity.find("order by id desc").fetch(2);(2)错误验证:if (validation.hasErrors()) {renderText(validation.errors().get(0).mes...
分类:Web程序   时间:2015-04-21 17:54:37    阅读次数:126
MySQL 获取连续范围
1、原始数据 2、把running_number转成数据,并加上一列有序数字SELECT d.running_number+0 running_number,@a:=@a+1 rn FROM device_data d,(SELECT @a:=0) a where d.device_id=13 order by d.running_number;3、running_number与有序数据的差,差...
分类:数据库   时间:2015-04-21 16:06:56    阅读次数:229
LeetCode Restore IP Addresses
Given a string containing only digits, restore it by returning all possible valid IP address combinations. For example: Given "25525511135", return ["255.255.11.135", "255.255.111.35"]. (Order ...
分类:其他好文   时间:2015-04-21 16:06:05    阅读次数:99
.htaccess根据IP地址限制访问
屏蔽IP地址屏蔽IP地址有时是非常必要的,比如对于一个外贸公司网站,来自国内的访问是不会带来任何经济效益的,而且还占用服务器资源,造成访问延迟等问题。如果要屏蔽某一特定IP可以使用:order allow,denydeny from 192.168.0.1allow from all如果想要屏蔽多个...
分类:数据库   时间:2015-04-21 12:47:27    阅读次数:162
mysql分页与分页性能查询优化
mysql分页就直接使用limit进行操作,limit如果我们直接不加任何处理可能数据大了就会很卡的。 一. 最常见MYSQL最基本的分页方式: ????select?* from content order by id desc limit 0, 10 在中小数据量的情...
分类:数据库   时间:2015-04-21 10:03:54    阅读次数:198
hdu 3572 Task Schedule 最大流 Dinic算法,,卡时间。。建图非常有讲究
Problem Description Our geometry princess XMM has stoped her study in computational geometry to concentrate on her newly opened factory. Her factory has introduced M new machines in order to process the coming N tasks. For the i-th task, the factory has to...
分类:编程语言   时间:2015-04-21 09:50:13    阅读次数:190
leetcode || 103、Binary Tree Zigzag Level Order Traversal
problem: 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 exa...
分类:其他好文   时间:2015-04-21 09:37:25    阅读次数:266
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