Problem 364. Matrix spiral

Created by Bart

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>Make a spiral in a (n*n) matrix. The spiral has to start in the top left, and has to rotate clockwise to the center. The spiral has to have a padding of zeros between itself.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>The (n*n) matrix is filled with zeros except for the spiral, that has to be made of 11 (elevens, for visual reference). The final matrix has to have the same or more zeros than elevens.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Example: n=8</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>A =</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"code\"/></w:pPr><w:r><w:t><![CDATA[    11    11    11    11    11    11    11    11\n     0     0     0     0     0     0     0    11\n     0     0    11    11    11    11     0    11\n     0     0    11     0     0    11     0    11\n     0     0    11     0    11    11     0    11\n     0     0    11     0     0     0     0    11\n     0     0    11    11    11    11    11    11\n     0     0     0     0     0     0     0     0]]></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

201 Solutions
61 Solvers

Last Solution submitted on May 07, 2021

Last 200 Solutions

Problem Comments

1 Comment

1 Comment

Nikolaos Nikolaou on 13 Dec 2020

This one took me a while :)

Solution Comments

Solution 47300

1 Comment

1 Comment

Aurelien Queffurust on 19 Mar 2012

wow accumarray , cumsum , arrayfun interp1 ... in a signle line !

Problem Recent Solvers61

Problem Tags

matrix spiral

Community Treasure Hunt

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

Start Hunting!

Problem 364. Matrix spiral

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers61

Suggested Problems

More from this Author1

Problem Tags

Community Treasure Hunt

Problem 364. Matrix spiral

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers61

Suggested Problems

More from this Author1

Problem Tags

Community Treasure Hunt

Players