Problem 2063. A matrix of extroverts

Created by James

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>Now that the introverts have had their script, the extroverts spoke up (naturally!) and demanded one as well. You will be given a matrix. Write a MATLAB script to output a new matrix consisting of the average of all four terms that are next to each other.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>If your input is magic(3)</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"code\"/></w:pPr><w:r><w:t><![CDATA[     8     1     6\n     3     5     7\n     4     9     2]]></w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Your output will be:</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"code\"/></w:pPr><w:r><w:t><![CDATA[4.2500    4.7500\n5.2500    5.7500]]></w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>The top left term (4.25) is the average of [8 1 ; 3 5]. The bottom left term is the average of [3 5 ; 4 9], and so on. You can assume that the size of each of these matrices will be at least 2x2. Good luck!</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>"}]}

Solve

Solution Stats

258 Solutions
146 Solvers

Last Solution submitted on Jan 10, 2022

Last 200 Solutions

Problem Comments

Solution Comments

Solution 678913

1 Comment

1 Comment

bainhome on 2 Jun 2015

nicely done!first one use ndgrid finish the orginal expansion in this one.

Solution 372530

1 Comment

1 Comment

Jean-Marie Sainthillier on 11 Feb 2014

I think it's the first time I see this function in Cody.

Problem Recent Solvers146

Problem Tags

extroverts not enough narcissism

Community Treasure Hunt

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

Start Hunting!

Problem 2063. A matrix of extroverts

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers146

Suggested Problems

More from this Author80

Problem Tags

Community Treasure Hunt

Problem 2063. A matrix of extroverts

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers146

Suggested Problems

More from this Author80

Problem Tags

Community Treasure Hunt

Players