Problem 733. Extract Built In Functions and Toolbox Functions from String or Function Handle

Created by Richard Zapor

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 Built-In functions and Toolbox functions in either a string or a function handle.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Generate a string of alphabetized Built-In functions followed by alphabetized Functions.</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>Inputs:</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>fh=@(x)log10(x)+log2(x)+abs(x)</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>str='smooth3(x,y)-filter(x)+abs(n)+filter2(u)+sin(x)+numel(z)'</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>Outputs:</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>'abs log2 log10'</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>'abs filter numel sin filter2 smooth3'</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Related to </w:t></w:r><w:r><w:t> </w:t></w:r><w:hyperlink w:docLocation=\"http://www.mathworks.com/matlabcentral/cody/problems/464-function-sniffer\"><w:r><w:t>Cody_464</w:t></w:r></w:hyperlink></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

302 Solutions
62 Solvers

Last Solution submitted on Jun 29, 2022

Last 200 Solutions

Problem Comments

6 Comments

6 Comments

Show 3 older comments

Venu Lolla on 6 Jun 2012

Richard: I believe there are a couple of inconsistencies in the test cases.

- You mention in the problem statement that the 'alphabetized built-in' functions should follow 'alphabetized' functions. However, 'log10' (not built-in) appears before 'log2' (built-in).

- 'i' is also a built-in function. 'which i' indicates that.

Venu Lolla on 6 Jun 2012

'i' in test case 2 is also 'built-in'

Aurelien Queffurust on 17 Jul 2012

I agree , exist('i') return 5 .

Richard Zapor on 18 Jul 2012

I changed hte "i" to "k".
Even though "i" was being used as a variable and not in its capacity as a built-in function.

Mayank Bajpai on 31 Oct 2020

In what order the names of the function are sorted?
(Thanks for the useful tags.)

Jakeb Chouinard on 9 Dec 2020

The functions are sorted alphabetically and by type.
Ex. [built_in_alphabetical, toolkit_alphabetical]

Solution Comments

Solution 3854278

1 Comment

1 Comment

Hao Ting on 26 Nov 2020

IMHO, this question makes no sense,
Other methods can be used to examine the exist function. The test sample for this subject is boring.

Problem Recent Solvers62

Problem Tags

Community Treasure Hunt

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

Start Hunting!

Problem 733. Extract Built In Functions and Toolbox Functions from String or Function Handle

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers62

Suggested Problems

More from this Author260

Problem Tags

Community Treasure Hunt

Problem 733. Extract Built In Functions and Toolbox Functions from String or Function Handle

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers62

Suggested Problems

More from this Author260

Problem Tags

Community Treasure Hunt

Players