Problem 2062. A matrix of introverts

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>You are given a matrix full of numbers who happen to be very shy. Write a MATLAB function that will put a square of zeros around each term in the matrix, thus giving them the privacy and space they desire. This should include a border of zeros around the outside of the matrix.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>For example, if your input matrix 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[ [0 0 0 0 0 0 0\n  0 8 0 1 0 6 0\n  0 0 0 0 0 0 0\n  0 3 0 5 0 7 0\n  0 0 0 0 0 0 0\n  0 4 0 9 0 2 0\n  0 0 0 0 0 0 0]]]></w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Please help them out, but do so quietly; they don't like the attention very much.</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

136 Solutions
58 Solvers

Last Solution submitted on Jan 03, 2022

Last 200 Solutions

Problem Comments

2 Comments

2 Comments

Selvaraaju Murugesan on 10 Jan 2014

dyadup funciton is not supported?!

James on 10 Jan 2014

I'd never heard of it, but you are correct: it does exactly what this problem asks. It's part of the wavelet toolbox, which I guess isn't included in Cody.

Solution Comments

Solution 372142

2 Comments

2 Comments

J.R.! Menzinger on 19 Dec 2013

Always a chance to learn new matlab functions.

bainhome on 31 May 2015

"find" combine with "accumarray" function so naturally,couldn't even tell which is which.really good work!

Problem Recent Solvers58

Problem Tags

lonely too much narcissism

Community Treasure Hunt

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

Start Hunting!

Problem 2062. A matrix of introverts

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers58

Suggested Problems

More from this Author80

Problem Tags

Community Treasure Hunt

Problem 2062. A matrix of introverts

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers58

Suggested Problems

More from this Author80

Problem Tags

Community Treasure Hunt

Players