Problem 1153. Accessing elements on the diagonal

Created by HARISANKAR PS

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>Access the diagonal elements of a matrix without 'diag' function</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

195 Solutions
87 Solvers

Last Solution submitted on Sep 14, 2020

Last 200 Solutions

Problem Comments

1 Comment

1 Comment

Richard Zapor on 30 Dec 2012

Confused by test 6, x = [1:3;4:6;7:9;10:12]';
y_correct = [1 6 11]; I think this should be [1 5 9] as array is [1 4 7 10;2 5 8 11;3 6 9 12]

Solution Comments

Solution 183476

1 Comment

1 Comment

Khaled Hamed on 30 Dec 2012

Right solution to right problem

Solution 183474

1 Comment

1 Comment

Duane Hanselman on 30 Dec 2012

Test #5 is incorrect. Transpose on x makes the diagonal [1 5 9], [1 6 11] are not on any diagonal. #5 is the transpose of #4 and taking the transpose does not change the diagonal, unless you have some other definition for diagonal. A good solution is x(find(eye(size(x))))

Solution 183472

1 Comment

1 Comment

Khaled Hamed on 30 Dec 2012

Rigt solution for wrong problem

Problem Recent Solvers87

Problem Tags

diagonal

Problem 1153. Accessing elements on the diagonal

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers87

Suggested Problems

More from this Author6

Problem Tags

Problem 1153. Accessing elements on the diagonal

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers87

Suggested Problems

More from this Author6

Problem Tags

Players