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

373 Solutions
191 Solvers

Last Solution submitted on Aug 09, 2020

Last 200 Solutions

Problem Comments

Solution Comments

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 Solvers191

Problem Tags

easy matrix sum

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

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers191

Suggested Problems

More from this Author2

Problem Tags

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

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers191

Suggested Problems

More from this Author2

Problem Tags

Players