Problem 2672. Largest Geometric Series

Created by rifat

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>Extension of Ned Gulley's wonderful</w:t></w:r><w:r><w:t> </w:t></w:r><w:hyperlink w:docLocation=\"http://www.mathworks.com/matlabcentral/cody/problems/317\"><w:r><w:t>Problem 317</w:t></w:r></w:hyperlink><w:r><w:t>.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>In a geometric series, ratio of adjacent elements is always a constant value. For example, [2 6 18 54] is a geometric series with a constant adjacent-element ratio of 3.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>A vector will be given. Find the largest geometric series that can be formed from the vector.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Example:</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"code\"/></w:pPr><w:r><w:t><![CDATA[ input = [2 4 8 16 1000 2000];\n output = [2 4 8 16];]]></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

261 Solutions
45 Solvers

Last Solution submitted on Oct 23, 2021

Last 200 Solutions

Problem Comments

3 Comments

3 Comments

Jean-Marie Sainthillier on 18 Dec 2015

Interesting problem but tests are too tricky.

Rafael S.T. Vieira on 16 Aug 2020

I am not sure that a list of equal numbers qualifies as a series. Would it be a geometric or an arithmetic series?

Lincoln Poon on 17 Feb 2021

'Randperm' is making this question a whole lot harder...

Problem Recent Solvers45

Problem Tags

Community Treasure Hunt

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

Start Hunting!

Problem 2672. Largest Geometric Series

Solution Stats

Last 200 Solutions

Problem Comments

Problem Recent Solvers45

Suggested Problems

More from this Author44

Problem Tags

Community Treasure Hunt

Problem 2672. Largest Geometric Series

Solution Stats

Last 200 Solutions

Problem Comments

Problem Recent Solvers45

Suggested Problems

More from this Author44

Problem Tags

Community Treasure Hunt

Players