Problem 1949. Get top 5 Cody Player Emails Automatically

Created by Shaun VanWeelden

Solve Later

{"relationships":[{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/document","targetMode":"","relationshipId":"rId1","target":"/matlab/document.xml"},{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/output","targetMode":"","relationshipId":"rId2","target":"/matlab/output.xml"}],"parts":[{"partUri":"/matlab/document.xml","relationship":[],"contentType":"application/vnd.mathworks.matlab.code.document+xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<w:document xmlns:w=\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\"><w:body><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Yes, this is a little scary and also entirely possible to do in MATLAB, so let's do it!</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Looking at the list of the players</w:t></w:r><w:r><w:t> </w:t></w:r><w:hyperlink w:docLocation=\"http://www.mathworks.com/matlabcentral/cody/players\"><w:r><w:t>http://www.mathworks.com/matlabcentral/cody/players</w:t></w:r></w:hyperlink><w:r><w:t> automatically sorts them in order according to rank. For times sake, let's say we only want to get the emails from the first 5 people. This is relatively easy to do by hand, just click on the persons name, click on \"View Profile Information\" and you have the email but if you wanted to do say the first 1,000 people instead, that would be not very fun to do by hand.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>For this program, let's say we want the top 5 profiles that give a \"real\" email address (not a contact form) to be in a cell array. This means that if one of the top 5 people have removed their email address, your returned cell array will have less than 5 emails in it.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>If you are not sure where to start, check out the urlread command, it allows you to put the web page source code into a string. From there, you are able to parse through that to get the URLs for the top 5 players web profile. From there, look for a \"mailto:\" and if it is there, the email address is immediately following it. If the string \"mailto:\" does not exist, there is no email address on that webpage. Put the emails in a cell array when you find them and you are good to go!</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>As an example, I have poorly written MATLAB code that works in the test case since I want the test case to always be accurate. 98% of the execution time is spent reading the webpages, and at least on my computer, that takes quite a while to do (about 2.5 seconds per profile page).</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:rPr><w:b/></w:rPr><w:t>I am definitely not collecting emails for anything, and you should not either! This is designed solely as a learning example and should in no way be used for anything unethical. All information obtained here is easily obtained by anyone in the world who knows how to program.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:rPr><w:b/></w:rPr><w:t>If this scares you and you want to remove your email address from your profile, it's easy. All you have to do is click \"My Community Profile\" (underneath the search bar at very top of screen) and then edit your preferences to not display your email address.</w:t></w:r></w:p></w:body></w:document>"},{"partUri":"/matlab/output.xml","contentType":"text/xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\" ?><embeddedOutputs><metaData><evaluationState>manual</evaluationState><layoutState>code</layoutState><outputStatus>ready</outputStatus></metaData><outputArray type=\"array\"/><regionArray type=\"array\"/></embeddedOutputs>"}]}

Yes, this is a little scary and also entirely possible to do in MATLAB, so let's do it!Looking at the list of the players <a href = "http://www.mathworks.com/matlabcentral/cody/players">http://www.mathworks.com/matlabcentral/cody/players</a> automatically sorts them in order according to rank. For times sake, let's say we only want to get the emails from the first 5 people. This is relatively easy to do by hand, just click on the persons name, click on "View Profile Information" and you have the email but if you wanted to do say the first 1,000 people instead, that would be not very fun to do by hand.For this program, let's say we want the top 5 profiles that give a "real" email address (not a contact form) to be in a cell array. This means that if one of the top 5 people have removed their email address, your returned cell array will have less than 5 emails in it.If you are not sure where to start, check out the urlread command, it allows you to put the web page source code into a string. From there, you are able to parse through that to get the URLs for the top 5 players web profile. From there, look for a "mailto:" and if it is there, the email address is immediately following it. If the string "mailto:" does not exist, there is no email address on that webpage. Put the emails in a cell array when you find them and you are good to go!As an example, I have poorly written MATLAB code that works in the test case since I want the test case to always be accurate. 98% of the execution time is spent reading the webpages, and at least on my computer, that takes quite a while to do (about 2.5 seconds per profile page).I am definitely not collecting emails for anything, and you should not either! This is designed solely as a learning example and should in no way be used for anything unethical. All information obtained here is easily obtained by anyone in the world who knows how to program.If this scares you and you want to remove your email address from your profile, it's easy. All you have to do is click "My Community Profile" (underneath the search bar at very top of screen) and then edit your preferences to not display your email address.

Yes, this is a little scary and also entirely possible to do in MATLAB, so let's do it!

Looking at the list of the players <http://www.mathworks.com/matlabcentral/cody/players> automatically sorts them in order according to rank. For times sake, let's say we only want to get the emails from the first 5 people. This is relatively easy to do by hand, just click on the persons name, click on "View Profile Information" and you have the email but if you wanted to do say the first 1,000 people instead, that would be not very fun to do by hand.

For this program, let's say we want the top 5 profiles that give a "real" email address (not a contact form) to be in a cell array. This means that if one of the top 5 people have removed their email address, your returned cell array will have less than 5 emails in it.

If you are not sure where to start, check out the urlread command, it allows you to put the web page source code into a string. From there, you are able to parse through that to get the URLs for the top 5 players web profile. From there, look for a "mailto:" and if it is there, the email address is immediately following it. If the string "mailto:" does not exist, there is no email address on that webpage. Put the emails in a cell array when you find them and you are good to go!

As an example, I have poorly written MATLAB code that works in the test case since I want the test case to always be accurate. 98% of the execution time is spent reading the webpages, and at least on my computer, that takes quite a while to do (about 2.5 seconds per profile page).

*I am definitely not collecting emails for anything, and you should not either! This is designed solely as a learning example and should in no way be used for anything unethical. All information obtained here is easily obtained by anyone in the world who knows how to program.*

*If this scares you and you want to remove your email address from your profile, it's easy. All you have to do is click "My Community Profile" (underneath the search bar at very top of screen) and then edit your preferences to not display your email address.*

Solve

Solution Stats

32 Solutions
13 Solvers

Last Solution submitted on Mar 29, 2023

Last 200 Solutions

Problem Comments

1 Comment

1 Comment

Rafael S.T. Vieira on 1 Nov 2020

The test suite is broken.

Solution Comments

Solution 10799109

1 Comment

1 Comment

Christian Schröder on 29 Mar 2023 at 20:44

Those pesky broken test suites.

Solution 336377

1 Comment

1 Comment

Shaun VanWeelden on 24 Oct 2013

Awesome use of regexp Alfonso, looks like you may have done this a time or two! ;)

Problem Recent Solvers13

Problem Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Problem 1949. Get top 5 Cody Player Emails Automatically

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers13

Suggested Problems

More from this Author3

Problem Tags

Community Treasure Hunt

Problem 1949. Get top 5 Cody Player Emails Automatically

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers13

Suggested Problems

More from this Author3

Problem Tags

Community Treasure Hunt

Players