Problem 1877. Friday the 13th

Created by Kevin Hellemans

Solve Later

{"relationships":[{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/document","relationshipId":"rId1","target":"/matlab/document.xml"},{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/output","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\"?><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>According to superstition, lots of unpleasant stuff happens on Friday the 13th, so you might like to find the next occurence of such a date. Given a date string ('dd/mm/yyyy'), return the next occurence of a Friday the 13th. If the date string is already a Friday the 13th, return the original string. Output should be in the form of a date string ('dd/mm/yyyy').</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/><w:jc w:val=\"left\"/></w:pPr><w:r><w:t>Example: date = '13/09/2013', nextfri13(date) = '13/09'2013'; date = '15/12/2013', nextfri13(date) = '13/06/2014';</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/><w:jc w:val=\"left\"/></w:pPr><w:r><w:t>And so on. Good luck!</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

55 Solutions
28 Solvers

Last Solution submitted on Aug 03, 2020

Last 200 Solutions

Solution Comments

Solution 320266

3 Comments

3 Comments

Sean de Wolski on 17 Sep 2013

Ahh European dates!

Kevin Hellemans on 17 Sep 2013

It makes more sense. Just like the metric system :)

Tim on 17 Sep 2013

Actually, the unambiguously correct way to write dates is yyyy/mm/dd, because more significant digits always go to the left. This also allows a simple ASCII sort to sort them correctly.

Problem Recent Solvers28

Problem Tags

date