Problem 2811. Regex match

Created by Guillaume

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>Many regular expression engines have a simple function to quickly know whether a regular expression entirely matches a string or not, for example C++</w:t></w:r><w:r><w:t> </w:t></w:r><w:hyperlink w:docLocation=\"http://www.cplusplus.com/reference/regex/regex_match/\"><w:r><w:t>regex_match</w:t></w:r></w:hyperlink><w:r><w:t>, python</w:t></w:r><w:r><w:t> </w:t></w:r><w:hyperlink w:docLocation=\"https://docs.python.org/3/library/re.html?highlight=regex#re.fullmatch\"><w:r><w:t>regex.fullmatch</w:t></w:r></w:hyperlink><w:r><w:t>, and Java</w:t></w:r><w:r><w:t> </w:t></w:r><w:hyperlink w:docLocation=\"http://docs.oracle.com/javase/7/docs/api/java/util/regex/Pattern.html#matches(java.lang.String,%20java.lang.CharSequence)\"><w:r><w:t>Pattern.matches</w:t></w:r></w:hyperlink><w:r><w:t>. This is particularly useful for UIs that are only interested in validating strings.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Write such a function for MATLAB. As with other MATLAB's regex functions, this function should work with strings and cell arrays of strings.</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[tf = regex_match('2015', '[0-9]+'); %is string only made of numbers?\n tf = true\n\ntf = regex_match({'2015', '2015b', 'abc'}, '[0-9]+'); %match cell array against regex\n tf = [true false false]\n\ntf = regex_match('2015', {'[0-9]+', '[A-Za-z]+'}); %match string agains cell array of regex\n tf = [true false]\n\ntf = regex_match({'2015', 'abc'}, {'[0-9]+', '[A-Za-z]+'}); match cell against cell\n tf = [true true]]]></w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:rPr><w:i/></w:rPr><w:t>Note: calling java is forbidden</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>"}]}

Many regular expression engines have a simple function to quickly know whether a regular expression entirely matches a string or not, for example C++ <a href = "http://www.cplusplus.com/reference/regex/regex_match/">regex_match</a>, python <a href = "https://docs.python.org/3/library/re.html?highlight=regex#re.fullmatch">regex.fullmatch</a>, and Java <a href = "http://docs.oracle.com/javase/7/docs/api/java/util/regex/Pattern.html#matches(java.lang.String,%20java.lang.CharSequence)">Pattern.matches</a>. This is particularly useful for UIs that are only interested in validating strings.Write such a function for MATLAB. As with other MATLAB's regex functions, this function should work with strings and cell arrays of strings.Example<pre class="language-matlab">tf = regex_match('2015', '[0-9]+'); %is string only made of numbers?
 tf = true
</pre><pre class="language-matlab">tf = regex_match({'2015', '2015b', 'abc'}, '[0-9]+'); %match cell array against regex
 tf = [true false false]
</pre><pre class="language-matlab">tf = regex_match('2015', {'[0-9]+', '[A-Za-z]+'}); %match string agains cell array of regex
 tf = [true false]
</pre><pre class="language-matlab">tf = regex_match({'2015', 'abc'}, {'[0-9]+', '[A-Za-z]+'}); match cell against cell
 tf = [true true]
</pre>Note: calling java is forbidden

Many regular expression engines have a simple function to quickly know whether a regular expression entirely matches a string or not, for example C++ <http://www.cplusplus.com/reference/regex/regex_match/ regex_match>, python <https://docs.python.org/3/library/re.html?highlight=regex#re.fullmatch regex.fullmatch>, and Java <http://docs.oracle.com/javase/7/docs/api/java/util/regex/Pattern.html#matches(java.lang.String,%20java.lang.CharSequence) Pattern.matches>. This is particularly useful for UIs that are only interested in validating strings.

Write such a function for MATLAB. As with other MATLAB's regex functions, this function should work with strings and cell arrays of strings.

Example
 
  tf = regex_match('2015', '[0-9]+'); %is string only made of numbers?
      tf = true

tf = regex_match({'2015', '2015b', 'abc'}, '[0-9]+'); %match cell array against regex
      tf = [true false false]

tf = regex_match('2015', {'[0-9]+', '[A-Za-z]+'}); %match string agains cell array of regex
      tf = [true false]

tf = regex_match({'2015', 'abc'}, {'[0-9]+', '[A-Za-z]+'}); match cell against cell
      tf = [true true]

_Note: calling java is forbidden_

Solve

Solution Stats

62 Solutions
14 Solvers

Last Solution submitted on Jul 03, 2022

Last 200 Solutions

Problem Comments

Solution Comments

Solution 552740

1 Comment

1 Comment

Alfonso Nieto-Castanon on 6 Jan 2015

strcat on mixed input types, very nice!

Solution 552461

1 Comment

1 Comment

Jan Orwat on 6 Jan 2015

Very nice exception to the matlab documentation (I mean sizes between cell arrays).

Problem Recent Solvers14

Problem Tags

Community Treasure Hunt

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

Start Hunting!

Problem 2811. Regex match

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers14

Suggested Problems

More from this Author9

Problem Tags

Community Treasure Hunt

Problem 2811. Regex match

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers14

Suggested Problems

More from this Author9

Problem Tags

Community Treasure Hunt

Players