Problem 2990. Replace every 3rd element in a vector with 4

Created by Yaz Majeed

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>x is a vector of undetermined length</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>You are to replace every 3rd element with the number 4, example:</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>x = [11 23 34 43 2 31 6 34 5 45 26 7 78];</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>output = [11 23</w:t></w:r><w:r><w:t> </w:t></w:r><w:r><w:rPr><w:b/></w:rPr><w:t>4</w:t></w:r><w:r><w:t> 43 2</w:t></w:r><w:r><w:t> </w:t></w:r><w:r><w:rPr><w:b/></w:rPr><w:t>4</w:t></w:r><w:r><w:t> 6 34</w:t></w:r><w:r><w:t> </w:t></w:r><w:r><w:rPr><w:b/></w:rPr><w:t>4</w:t></w:r><w:r><w:t> 45 26</w:t></w:r><w:r><w:t> </w:t></w:r><w:r><w:rPr><w:b/></w:rPr><w:t>4</w:t></w:r><w:r><w:t> 78];</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Make sure the code accounts for varying vector lengths</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

307 Solutions
185 Solvers

Last Solution submitted on Aug 11, 2021

Last 200 Solutions

Problem Comments

1 Comment

1 Comment

Guillaume on 10 Feb 2015

In view of the recent spate of trivial problems with no test suite to speak of, thanks for making the effort of providing a proper test suite and a slightly less trivial problem.

Problem Recent Solvers185

Problem Tags

basics uic-bioe 240

Community Treasure Hunt

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

Start Hunting!

Problem 2990. Replace every 3rd element in a vector with 4

Solution Stats

Last 200 Solutions

Problem Comments

Problem Recent Solvers185

Suggested Problems

More from this Author28

Problem Tags

Community Treasure Hunt

Problem 2990. Replace every 3rd element in a vector with 4

Solution Stats

Last 200 Solutions

Problem Comments

Problem Recent Solvers185

Suggested Problems

More from this Author28

Problem Tags

Community Treasure Hunt

Players