Problem 2587. Find indices of diagonal elements

Created by Jean-Marie Sainthillier

Solve Later

{"relationships":[{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/document","relationshipId":"rId1","target":"/matlab/document.xml"},{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/output","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\"?><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>Given a matrix A and a diagonal index d (where 0 indicates the main diagonal and off-diagonals are identified by positive and negative integers), return the indices of the elements of this diagonal.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/><w:jc w:val=\"left\"/></w:pPr><w:r><w:t>d is always correct but A can contain repetitions, so ...</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

177 Solutions
55 Solvers

Last Solution submitted on Jun 26, 2021

Last 200 Solutions

Problem Comments

2 Comments

2 Comments

Jon on 18 Sep 2014

Need a test case with a 0 on the chosen diagonal.

Peng Liu on 24 Aug 2015

Agree with Jon's comment that the matrix should contain 0 elements

Solution Comments

Solution 501606

3 Comments

3 Comments

Jean-Marie Sainthillier on 15 Sep 2014

Yes !!

rifat on 15 Sep 2014

so simple that it never occurred to me

J.R.! Menzinger on 16 Sep 2014

Thanks! ;-)

Problem Recent Solvers55

Problem Tags

Community Treasure Hunt

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

Start Hunting!

Problem 2587. Find indices of diagonal elements

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers55

Suggested Problems

More from this Author43

Problem Tags

Community Treasure Hunt

Problem 2587. Find indices of diagonal elements

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers55

Suggested Problems

More from this Author43

Problem Tags

Community Treasure Hunt

Players