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 as5g*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 (
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
Given the two files a and B, each of them Stores 5 billion URLs. each url occupies 64 bytes and the memory limit is 4 GB. how can we find the common URLs of files a and B ?, 5 billion 4g. Given the two files a and B, each of them Stores 5 billion URLs. each url occupies 64 bytes and the memory limit is 4 GB. how can we find
Given the two files a and B, each of them stores 5 billion URLs. Each url occupies 64 bytes and the memory limit is 4 GB. How can we find the common URLs of files a and B ?, 5 billion 4g
It can be estimated that the size of each file is 5G * 64 = 300G, much larger than 4G. Therefore, it is impossible to fully load it into the memory for processing. Consider a divide-and-conquer approach.Traverse file a, ob
It can be estimated that the size of each file is 5g * 64 = 300g, much larger than 4G. Therefore, it is impossible to fully load it into the memory for processing. Consider a divide-and-conquer approach.Traverse file a, obtain Hash (URL) % 1000 for each URL, and store the URL to 1000 small files (set to A0, A1 ,... a999. In this way, the size of each small file i
Find the php implementation code and click the url to record a specified parameter. I am not familiar with nbsp; php nbsp; and need a function: click url nbsp; to record a string of url nbsp; in the database. how can this problem be solved? Used to cancel a subscription, for example, nbsp; mydomain. comabc. php? U
You can use a URL to capture the TITLE of a web page. if some websites cannot find the TITLE, the method is stupid. This post was last edited at 11:25:29, January 11 ,.
Curl capture titleThe code is written in this way. I don't know if there are any better methods. Please give me some advice
Some websites can be caught, such as Baidu and some websites, such as the homepage of Pacific automobile.
Publi
Background-image cannot be displayed if the URL cannot find a path picture. We all know that we can't use absolute path, but the relative path I actually have a problem today, really stupid to die myself.In CSS, use Background:url (.. /img/banner-bg.jpg); This is in CSS, so this path must be based on the path where the CSS (the stylesheet file) is located,This is certainly not the same as the previous IMG s
How can we find the first 1 million URLs with the highest frequency ?, 1 million url
This is a phone interview question from Alibaba. The first solution I want is a little restricted, and I will write optimization questions later.
Experiment data, python captured from Baidu:
#-*-Coding: UTF-8-*-"Spyder EditorThis is a temporary script file. "import urllib2 import re import OS # connect to a
Give an example of a previous project: When you add a student, there is no class data. Need to automatically jump to the class display page.
Question: Students, classes and other data is placed in the IFRAME inside the JSP. The student-managed button is on the Main.html menu bar.
Workaround:
Find the parent form's class management
Copy Code code as follows:
$ (window.parent.document). Find
Give an example of a previous project: When you add a student, there is no class data. Need to automatically jump to the class display page.Question: Students, classes and other data is placed in the IFRAME inside the JSP. The student-managed button is on the Main.html menu bar.Mian Page MenuClass Management:Student Management:The JSP in the IFRAME is constantly changing.Workaround:Student management JSP, find the parent form's class management
Sometimes want to download their own uploaded source code on other machines, found that git is not as easy as SVN can see, these two days on the internet, and finally found a way.There will always be a. Git directory under the usual local GitHub directory, click to enter, and see the file structure as shown:Where config is the file we're looking for, open it, and see something like this, where the URL is what we're looking for.[Core]repositoryformatve
method.2. Assume that Struts2 has been handed over to the spring container management. We can use annotations to find action and the action's method.(It is recommended to use this method.) So we don't have to configure all kinds of action in Struts.xml file, can give Struts.xml lose weight.)URL: http://localhost:8080/test/admin/editproduct.html?productInfoId=1//Number of parameters is optional@SuppressWarn
Ask for a CMS URL: Index.php?m=indexa=login's HTML file where to find AH?
Ask for a CMS URL: Index.php?m=indexa=login's HTML file where to find AH?
------to solve the idea----------------------
With the framework, usually index.php sibling directory has a control of the directory, there is a index.php, open it has a lo
Find a regular substitution expression for a URL intercept
http://p.yiqifa.com/n?k=2mLErnws6E4H2mLErI6H2mLsWN3OrnDsWN2e6QLs1NDF6ZLErZyH2mLe6n6w3E3LMZqt6cuLUJeHspm= 1.1.1.1t=http://www.xuansou.com/
Such a URL, want to put the second http://Before the contents of all replaced by empty
Just to keep http://www.xuansou.com/.
What do you need, thank you, I'm a ro
When the action cannot be found from the user's URL, we want a default friendly interface to return to the user. The following describes the configuration in struts.
For applications that use the struts2 framework, do not directly link hyperlinks to a view resource. This method adds additional risks. We recommend that you send all requests to the struts2 framework to process user requests, even if they are just simple hyperlinks. For simple hy
The Find A-element method is very right, you can pass the ID or class, but if neither of the two conditions, there is no way? NO, through the URL is also possible, here is a good example, you can feel the Give an example of a previous project: When you add a student, there is no class data. Need to automatically jump to the class display page. nbsp; nbsp; Questions: Students, classes and other data is pl
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.