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llinux之sudo配置
1.使用visudo来配置,因为visudo在配置完毕后,会检查是否有语法错误.2.配置格式:授权账号 授权账号所在hostname=(可切换的账号) 可执行的命令command(如果是具体命令,最好使用绝对路径)例如:无论Tom在哪个地方登陆,都可以替换为任何账号来执行命令.Tom All=(Al...
分类:系统相关   时间:2014-05-19 17:01:29    阅读次数:346
Leetcode | Combination Sum I && II
Combination Sum IGiven a set of candidate numbers (C) and a target number (T), find all unique combinations in C where the candidate numbers sums to T...
分类:其他好文   时间:2014-05-19 16:41:14    阅读次数:269
zoj3778 Talented Chef
As we all know,Coach Gaois a talented chef, because he is able to cookMdishes in the same time. Tonight he is going to have a hearty dinner with his g...
分类:其他好文   时间:2014-05-19 15:23:53    阅读次数:272
all,any函数
all函数:当矩阵全为非零元素时返回1,否则(存在零元素),返回0; any函数:当矩阵中存在非零元素时返回1,否则(全为零元素),返回0。 如果A是一个向量,所有的元素都是非零的,则返回1,如果有一个元素为零,则返回0 如果A是一个矩阵,则返回一个行向量,用于检测每一列是否全...
分类:其他好文   时间:2014-05-19 14:04:59    阅读次数:228
springMVC项目异步处理请求的错误Async support must be enabled on a servlet and for all filters involved in async
从github上down下来一个项目,springMVC-chat。作者全是用的注解,也就是零配置。 这可苦了我,经过千辛万苦,最终集成到现在的项目中有一点样子了,结果报出来下面的错误。红色部分。解决方法为,在web.xml中也就是springMVC的总配置文件中加上一句话: true 这句话的位置一定要放正确,否则,一切都是徒劳。至于配置spring异步支持(其实是配置servlet异...
分类:编程语言   时间:2014-05-18 18:32:49    阅读次数:499
OpenStack_Swift源码分析——Object-auditor源码分析(2)
1 Object-aduitor审计具体分析 上一篇文章中,讲解了Object-aduitor的启动,其中审计的具体执行是AuditorWorker实现的,在run_audit中实例化了AuditorWorker类,并调用audit_all_objects方法,下面看此方法的具体代码实现: def audit_all_objects(self, mode='once', device_dirs...
分类:其他好文   时间:2014-05-18 16:06:57    阅读次数:427
LeetCode: Valid Parentheses [020]
【题目】 Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. The brackets must close in the correct order, "()" and "()[]{}" are all valid but "(]" and "([)]" are not. 【题意】 判断给定的字符串是否是合法的...
分类:其他好文   时间:2014-05-18 10:08:11    阅读次数:327
LeetCode 017 4Sum
【题目】 Given an array S of n integers, are there elements a, b, c, and d in S such that a + b + c + d = target? Find all unique quadruplets in the array which gives the sum of target. Note: Elements in a quadruplet (a,b,c,d) must be in non-descending ord...
分类:其他好文   时间:2014-05-18 08:46:04    阅读次数:227
LeetCode: Letter Combinations of a Phone Number [018]
【题目】 Given a digit string, return all possible letter combinations that the number could represent. A mapping of digit to letters (just like on the telephone buttons) is given below. Input:Digit string "23" Output: ["ad", "ae", "af", "bd", "be", "bf",...
分类:其他好文   时间:2014-05-18 07:30:12    阅读次数:340
LeetCode 015 3Sum
【题目】 Given an array S of n integers, are there elements a, b, c in S such that a + b + c = 0? Find all unique triplets in the array which gives the sum of zero. Note: Elements in a triplet (a,b,c) must be in non-descending order. (ie, a ≤ b ≤ c) The so...
分类:其他好文   时间:2014-05-18 03:15:50    阅读次数:287
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