Problem 42922. Zero Cross

Created by Abdullah Caliskan

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>Write a function that counts the number of times n a signal x changes sign.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><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[ x = [1 2 -3 -4 5 6 -7 8 -9 10 11]\n n = 6\n\n x = [1 2 -3]\n n = 1]]></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

149 Solutions
84 Solvers

Last Solution submitted on Nov 28, 2020

Last 200 Solutions

Problem Comments

2 Comments

2 Comments

Jan Orwat on 27 Aug 2016

It would be beneficial for the problem if zeros were added to test cases, for example [...,1,2,0,-1,-2,...], [...,1,2,3,0,2,3,...], [...1,2,3,0,0,0,1,2,...], [...,1,2,0,0,-1,-2,...], etc.

goc3 on 23 May 2018

Additional test cases have been added and the description slightly modified.

Problem Recent Solvers84

Problem Tags

vector zero cross

Community Treasure Hunt

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

Start Hunting!

Problem 42922. Zero Cross

Solution Stats

Last 200 Solutions

Problem Comments

Problem Recent Solvers84

Suggested Problems

More from this Author21

Problem Tags

Community Treasure Hunt

Problem 42922. Zero Cross

Solution Stats

Last 200 Solutions

Problem Comments

Problem Recent Solvers84

Suggested Problems

More from this Author21

Problem Tags

Community Treasure Hunt

Players