Problem 1971. Remove element(s) from cell array

Created by J-G van der Toorn

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>You can easily remove an element (or a column in any dimension) from a normal matrix, but assigning that value (or range) empty. For example</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"code\"/></w:pPr><w:r><w:t><![CDATA[A = 1:10\nA(5) = []]]></w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>results in</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 4 6 7 8 9 10]]></w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>You task is to find the shortest, elegant, way in Matlab to do the same for cell arrays. Regexp, eval, and other workarounds that trick mtree are considered stupid, and will not be appreciated.</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

748 Solutions
275 Solvers

Last Solution submitted on Oct 22, 2020

Last 200 Solutions

Problem Comments

1 Comment

1 Comment

源樹上林 on 22 Aug 2020

good

Solution Comments

Solution 2674019

1 Comment

1 Comment

Matthias Saurer on 10 Jul 2020

you should also add a test suit where the individual elements are not increasing monotonously, e.g. x={9,4,5,8,3,1,6,4}

Solution 2673863

1 Comment

1 Comment

Matthias Saurer on 9 Jul 2020

that was a nice one :))

Problem Recent Solvers275

Problem Tags

cell arrays remove

Community Treasure Hunt

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

Start Hunting!

Problem 1971. Remove element(s) from cell array

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers275

Suggested Problems

More from this Author31

Problem Tags

Community Treasure Hunt

Problem 1971. Remove element(s) from cell array

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers275

Suggested Problems

More from this Author31

Problem Tags

Community Treasure Hunt

Players