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Given a, b two files, each store 5 billion URLs, each URL occupies 64 bytes, memory limit is 4G, how to find a, b file common URL?

You can estimate the size of each file as 5g*64=300g, far greater than4G. So it is not possible to fully load it into memory for processing. Consider adopting a divide-and-conquer approach. Traversing filesA, for eachURL FetchHash (URL)%1000, and then, based on the resulting value,URLs are stored separately in the1000 Small files (set toA0,A1,... a999). So the size of each small file is about300m. Traverse file b, take and a the same way

PHP to convert the URL into a short URL algorithm instance sharing

The short URL, as the name implies, is in the form of a relatively short URL. In Web 2.0 today, it has to be said that this is a trend. There are many similar services, with a short URL you can use a short URL instead of the original lengthy URL, so that users can easily sha

Php simple short URL (short URL) restoration method (available for test)

This article mainly introduces php's simple method of restoring a short website, using the website administrator's short website t. cnheEHwk is used as an example to describe how to restore a short URL in php. it is very simple and practical. if you need it, you can refer to the following example to describe how to restore a short URL in php. We will share this with you for your reference. The details are a

How to Use js to get the URL Information of the current page (JS to get the current URL Information)

Sets or obtains the specified file name or path of an object. Alert (window. Location. pathname) Set or retrieve the entire URL as a string. Alert (window. Location. href ); Set or obtain the port number associated with the URL. Alert (window. Location. Port) Set or obtain the protocol section of the URL. Alert (window. Location. Protocol) Set or obtain t

SharePoint 2010 URL shortener -- SharePoint 2010 short URL Generator

SharePoint 2010 URL shortener -- SharePoint 2010 short URL Builder project description this project has added this feature, you can generate short URLs on the SP website. These URLs point to lists or documents. For example, http: // Smallville-PC/URL/nnefhmo.This project allows users to create short URLs pointing to documents or lists/libraries, so that they can

To view the URL's intermediate jump URL

Google Chrome (latest version):Press F12 to open the Developer tool, click Network, select the first icon (Preserve Log upon Navigation)Enter the URL in the browser address bar to view a list of captured URLsFirefox browser (latest version):Press CTRL+SHIFT+Q, open Network Monitor, enter the URL in the browser address field to return to view the captured URL list

Java -- & gt; Use the URL class to download images, java -- url class Images

Java --> use the URL class to download images, java -- url class Images --> Access the image address through the get request and save the data (that is, the image data) returned by the server to the local file... --> HttpURLConnectionUtil tool class Package com. dragon. java. downloadpic; import java. io. bufferedInputStream; import java. io. bufferedOutputStream; import java. io. file; import java. io. fil

Use URL rewriting in Ajax to avoid URL exposure

Remember an interview, there is such an interview question:JSP pages need to use the implementation of Ajax, the need to call the Java URL, the problem is if the user to view the page source code can see the real URL, how to avoid this problem.To tell the truth, Ajax I use only the fur, will only use JS to get parameters, and then passed to the Java application, processed by the application. If there is a r

Take the URL of the current address bar and the parameters in the URL

See this section of code:Exports.showlogin = function (req, res) {Req.session._loginreferer = Req.headers.referer;Res.render (' Sign/signin ');};Referer is a URL reference to a previous site that jumps to your siteIn PHP, you can get the value of the parameter in the URL by post or get, recently contacted node so what is done in Nodejs, on the code!The module HTTP URL

The WebView loadurl (string Url,map header) method in Android and the PostURL (string url,byte[] postdata) method Use the problem at the same time;

First, the Loadurl (String Url,map header) is the method used to load the add request header in the WebViewPostURL (String url,byte[] postdata) is the method used to load the add request body in WebViewBut the pit is that if you want to add both the request header and the request body both methods are not available, and the android comes with the WebView does not provide a methodAfter searching on StackOver

URL encoding (URL encoding)

URL encoding (URL encoding), also known as percent-encoding (percent-encoding), refers to the Uniform Resource Locator (URL) encoding mechanism for a specific contextUrlEncode: Encodes a string as a URLreturn value: StringFunction type: Encoding processingCoding principle:Convert the required characters into 16, then from right to left, take 4 bits (less than 4 d

The use of the URL generated by the {% URL%} in the Django template

Templates href formathref= "{% url ' name ' params%}"Where: Name is the name alias that is configured for a URL in the url.py file, and each parameter specific value of the params URL is used as follows:Add a url,name parameter to the URL of the. py #在

Use the ihttphandler interface to [rewrite different paths + Any URL suffix to the specified page without changing the URL address] (with source code) _ ax

[sequence] vs2003 after two days, we finally got it done! Thank you, Mr. Wei !! Thank you, Manager liang for telling me ihttphandler and ihttpmodule these two things have never been used before, In fact, Mr. Wei is generally responsible for writing documents .... [requirement] use different URLs to correspond to a page file, as shown in Source Path: http://www.IHttpHandler.com/target/target.aspx use the following address to reach the page: different suffixes: http://www.IHttpHandler

Turn: ASP. NET 2.0 uses httphandler to implement URL rewriting (pseudo URL and pseudo static)

Sometimes we will see the address "outputs"/aspx/show. aspx? Type = 12 id = 34 ", why? There are multiple reasons: First, enhance the friendliness of the URL. Remember the ratio of show-12-34.html to/aspx/show. aspx? Type = 12 id = 34 "is it easy to remember? The second is to facilitate search engine indexing. Many search engines prefer static html pages, such as Baidu. The second is for security reasons because the parameters "type" and "ID" are hi

WPF learning path (13) URL, wpf learning path url

WPF learning path (13) URL, wpf learning path url A URL consists of three parts: Protocol, host address of the resource, and resource path. In WPF, URLs are also composed of three parts: pack, authority (application: | siteoforigin :), and Path Resource file Local Assembly Uri uri = new Uri ("pack: // application:,/ResourceFile. xaml", UriKind. Absolute ); Uri

Use the Python script to replace the absolute url with the relative url.

Use the Python script to replace the absolute url with the relative url. A company project needs to upload images. At first, after uploading images, a colleague combined the current host into an absolute URL (http: // 192.168.1.1: 888/m/getimg? Filename=xxx.jpg: because it provides interfaces for mobile terminals at the same time, some bugs may occur in mobile ph

Discuz Windows configuration iis7 url static URL

In the jar searched a lot of posts about the static URL problem, at first also because of the same problem. Unfortunately, there are many jars in the way can not solve. So I had to grope. The solution is summarized as follows:I use the WIN2008+IIS7 standalone host, the others have not tried.1, first download a urlrewrite. As follows:Http://download.microsoft.com/download/0/3/E/03EBE3E1-494A-4DC7-B04B-F2B0A35FA988/rewrite_1.1_amd64_en-US.msiInstall dir

PHP 404 page/How to set 404 page/url static/url pseudo-static

image/png "Access plus 1 month"Expiresbytype image/jpg "Access plus 1 month"# js/css valid for 1 weeksExpiresbytype text/javascript "Access plus 1 week"Expiresbytype text/css "Access plus 1 week"WordPress Build Station program pseudo-static code# begin WordPress #这是一行注释, which means WordPress htaccess starts here#如果Apache加载了mod_rewrite. C module, run the following codeRewriteengine on #启用 mod_rewrite enginerewritebase/#设置目录重写的基准URL为/Rewriterule ^inde

An issue with BASE64 encrypted strings added to the URL (java.net.MalformedURLException:Illegal character in URL)

OrderYesterday in doing a Demo, because it is called third-party interface, the use of HTTP communication protocol, according to the document, the need to encrypt the parameters to add to the URL, but it is this seemingly ordinary operation, but let me really cost a lot of effort.BackgroundAbout BASE64, I don't want to say too much, because it's a very basic encoding, or an encryption method. Do not know can go to my previous blog to see, about encryp

Paragraph to match the URL, and converted to a clickable URL, do you have any good way?

Given a paragraph of text, the text contains a URL, how to extract the URL, and replace the clickable copy. Example: A copy: 欢迎来到http://www.baidu.com/aaa/bbb,多谢指教! Post-conversion copywriting: 欢迎来到http://www.baidu.com/aaa/bbb,多谢指教! Do you have any good ideas? Reply content: Given a paragraph of text, the text contains a URL, how to extract the

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