Problem 43135. Performance - summation

Created by Massimo Zanetti

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>Given a vector of natural numbers</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>x = [1,2,3,...,N]</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>compute the sum of its elements by not stressing the machine too much :)</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>HINT: maybe</w:t></w:r><w:r><w:t> </w:t></w:r><w:r><w:rPr><w:b/></w:rPr><w:t>sum(1:N)</w:t></w:r><w:r><w:t> won't pass the test suite..</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

75 Solutions
33 Solvers

Last Solution submitted on Sep 04, 2020

Last 200 Solutions

Problem Comments

1 Comment

1 Comment

Rafael S.T. Vieira on 4 Sep 2020 at 1:21

When measuring performance, it is best to use huge numbers (N = randi(1701034) may return a small number, and it would be best that you use something like 1e7 + randi(1e5)). If N is small (and currently it can be), the trivial sum may perform better depending on which operations are running at the server in a given moment.

Problem Recent Solvers33

Problem Tags

performance

Problem 43135. Performance - summation

Solution Stats

Last 200 Solutions

Problem Comments

Problem Recent Solvers33

Suggested Problems

More from this Author14

Problem Tags

Problem 43135. Performance - summation

Solution Stats

Last 200 Solutions

Problem Comments

Problem Recent Solvers33

Suggested Problems

More from this Author14

Problem Tags

Players