Problem 2240. Sum the 'edge' values of a matrix

Created by Dimitrios

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>Sum the 'edge' values of an input matrix (the values along the perimeter).</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Example</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"code\"/></w:pPr><w:r><w:t><![CDATA[ [1 2 3\n  4 5 6\n  7 8 9]]]></w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Output = 1 + 2 + 3 + 6 + 9 + 8 + 7 + 4 = 40;</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Assumption: Input matrix equal or bigger than 3x3.</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

499 Solutions
220 Solvers

Last Solution submitted on Nov 25, 2020

Last 200 Solutions

Problem Comments

Solution Comments

Solution 3355008

Solution 417940

1 Comment

1 Comment

Ben Petschel on 22 Aug 2016

how does this work?

Solution 416230

1 Comment

1 Comment

Binbin Qi on 28 Apr 2014

"find" can delete,do you agree?

Problem Recent Solvers220

Problem Tags

easy matrix sum

Community Treasure Hunt

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

Start Hunting!

Problem 2240. Sum the 'edge' values of a matrix

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers220

Suggested Problems

More from this Author2

Problem Tags

Community Treasure Hunt

Problem 2240. Sum the 'edge' values of a matrix

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers220

Suggested Problems

More from this Author2

Problem Tags

Community Treasure Hunt

Players