Problem 42633. Cumulative maximum of an array

Created by Matthew Eicholtz

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>Find the cumulative maximum of an array without using the built-in function</w:t></w:r><w:r><w:t> </w:t></w:r><w:hyperlink w:docLocation=\"http://www.mathworks.com/help/matlab/ref/cummax.html\"><w:r><w:t>cummax</w:t></w:r></w:hyperlink><w:r><w:t> (and a few others). Your function should act identically to cummax, allowing the same inputs.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:rPr><w:b/></w:rPr><w:t>Examples</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"code\"/></w:pPr><w:r><w:t><![CDATA[If X = [0 4 3\n        6 5 2]\n\ncumax(X,1) is [0 4 3  and cumax(X,2) is [0 4 4\n               6 5 3]                    6 6 6]\n\ncumax(X,1,'reverse') is [6 5 3  and cumax(X,2,'reverse') is [4 4 3\n                         6 5 2]                              6 5 2]\n\nAlso,\ncumax([8 9 1 10 6 1 3 6 10 10]) returns [8 9 9 10 10 10 10 10 10 10]\n\ncumax([8 9 1 10 6 1 3 6 10 10]') returns [8 9 9 10 10 10 10 10 10 10]']]></w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>See also</w:t></w:r><w:r><w:t> </w:t></w:r><w:hyperlink w:docLocation=\"http://www.mathworks.com/matlabcentral/cody/problems/42631-cumulative-minimum-of-an-array\"><w:r><w:t>cumin</w:t></w:r></w:hyperlink><w:r><w:t>.</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

116 Solutions
24 Solvers

Last Solution submitted on Mar 22, 2021

Last 200 Solutions

Problem Comments

Problem Recent Solvers24

Problem Tags

cummax matrix manipulation

Community Treasure Hunt

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

Start Hunting!

Problem 42633. Cumulative maximum of an array

Solution Stats

Last 200 Solutions

Problem Comments

Problem Recent Solvers24

Suggested Problems

More from this Author44

Problem Tags

Community Treasure Hunt

Problem 42633. Cumulative maximum of an array

Solution Stats

Last 200 Solutions

Problem Comments

Problem Recent Solvers24

Suggested Problems

More from this Author44

Problem Tags

Community Treasure Hunt

Players