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...
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其他好文 时间:
2015-04-21 22:08:41
阅读次数:
165
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...
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其他好文 时间:
2015-04-21 20:46:55
阅读次数:
128
下载地址:?https://b.alipay.com/order/productDetail.htm?productId=2013080604609654&tabId=4#ps-tabinfo-hash...
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其他好文 时间:
2015-04-21 18:50:13
阅读次数:
111
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...
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Web程序 时间:
2015-04-21 17:54:37
阅读次数:
126
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...
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数据库 时间:
2015-04-21 16:06:56
阅读次数:
229
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 ...
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其他好文 时间:
2015-04-21 16:06:05
阅读次数:
99
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...
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数据库 时间:
2015-04-21 12:47:27
阅读次数:
162
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...
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数据库 时间:
2015-04-21 10:03:54
阅读次数:
198
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...
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编程语言 时间:
2015-04-21 09:50:13
阅读次数:
190
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...
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其他好文 时间:
2015-04-21 09:37:25
阅读次数:
266