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Alice and Bob decide to play a funny game. At the beginning of the game they pick n(1 <= n <= 10 6) coins in a circle, as Figure 1 shows. A move consi ...
分类:其他好文   时间:2017-07-25 22:27:50    阅读次数:181
简单DP
Almost Sorted Array We are all familiar with sorting algorithms: quick sort, merge sort, heap sort, insertion sort, selection sort, bubble sort, etc. ...
分类:其他好文   时间:2017-07-24 20:26:59    阅读次数:267
pg_dump: [archiver (db)] connection to database “dbase” failed: FATAL: Peer authentication failed for user “postgres”
"Peer authentication" means that it's comparing your database username against your Linux username. It should work if you're logged in as postgres. Yo ...
分类:数据库   时间:2017-07-24 01:20:56    阅读次数:763
工厂方法模式
工厂方法模式(Factory Method Pattern),是简单工厂模式的扩展,其英文原话是"Define an interface for creating an object,but let the subclasses decide which class to instantiate.F ...
分类:其他好文   时间:2017-07-21 10:35:30    阅读次数:248
[LeetCode] Sum of Square Numbers 平方数之和
Given a non-negative integer c, your task is to decide whether there're two integers a and b such that a2 + b2 = c. Example 1: Example 2: s ...
分类:其他好文   时间:2017-07-16 15:50:23    阅读次数:137
Intersection
Intersection You are to write a program that has to decide whether a given line segment intersects a given rectangle. An example: line: start point: ( ...
分类:其他好文   时间:2017-07-15 19:51:14    阅读次数:200
633. Sum of Square Numbers
Given a non-negative integer c, your task is to decide whether there're two integers a and b such that a2 + b2 = c.Example 1:Input: 5Output: TrueExpla... ...
分类:其他好文   时间:2017-07-14 23:58:09    阅读次数:323
iOS下JS与OC互相调用(二)--WKWebView 拦截URL
在第一篇文章 iOS下JS与OC互相调用(一)中讲述了使用UIWebView拦截URL的方式来处理JS与OC交互。 由于UIWebView比较耗内存,性能上不太好,而苹果在iOS 8中推出了WKWebView。 同样的用WKWebView也可以拦截URL,做JS 与OC交互。关于WKWebView与 ...
分类:移动开发   时间:2017-07-12 16:15:46    阅读次数:272
Nagios check_ping Command Examples
check_ping command is a Nagios plugin that is used to check the ping output of a remote server. Based on the ping output, you can decide to set certai ...
分类:移动开发   时间:2017-07-09 16:23:19    阅读次数:401
设计模式之五:工厂方法模式(Factory Method)
工厂方法模式:定义了一个创建对象的接口,由子类来决定详细实例化那个对象。工厂方法模式让类的实例化转移到子类中来推断。 Define an interface for creating an object, but let subclasses decide which class to instan ...
分类:其他好文   时间:2017-07-05 09:52:38    阅读次数:169
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