Problem 43689. Make an identity matrix whose diagonal elements are 1:n

Created by Iik Jae Park

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>For a given input n, make an n by n identity matrix that contains the elements 1:n along its diagonal. For example, if input=5:</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"code\"/></w:pPr><w:r><w:t><![CDATA[ output = [1 0 0 0 0;\n           0 2 0 0 0;\n           0 0 3 0 0;\n           0 0 0 4 0;\n           0 0 0 0 5]]]></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

99 Solutions
73 Solvers

Last Solution submitted on Aug 18, 2022

Last 200 Solutions

Problem Comments

1 Comment

1 Comment

goc3 on 21 Dec 2016

This problem's title and description were cleaned up and additional test cases were added.

Problem Recent Solvers73

Problem Tags

Community Treasure Hunt

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

Start Hunting!

Problem 43689. Make an identity matrix whose diagonal elements are 1:n

Solution Stats

Last 200 Solutions

Problem Comments

Problem Recent Solvers73

Suggested Problems

More from this Author7

Problem Tags

Community Treasure Hunt

Problem 43689. Make an identity matrix whose diagonal elements are 1:n

Solution Stats

Last 200 Solutions

Problem Comments

Problem Recent Solvers73

Suggested Problems

More from this Author7

Problem Tags

Community Treasure Hunt

Players