Problem 35. Quote Doubler

Created by Cody Team

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{"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>Given a string s1, find all occurrences of the single quote character and replace them with two occurrences of the single quote character.</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>If there are n such occurrences in s1, then s2 will be n characters longer than s1.</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>"}]}

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Last Solution submitted on Mar 30, 2023

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Marlies on 26 Mar 2013

This problem description would benefit from an example of the kind of input that could be expected (as well as the correct output).

Based on the description, I thought that I had to replace the string 'o'clock' with the string 'o''clock' (so making it usable in MATLAB.). And no, I did not manage to create input like that.

Instead, you want to replace every single quote with a double quote EXCEPT for the start-and-end quotes.
So 'o''clock' ==> 'o''''clock'

Menghan on 5 Jan 2014

an example would make it clearer

Raihan Ahmed on 4 Sep 2015

I am not getting it .... Its always showing wrong

Jerivington on 30 May 2016

so weird!!!

Jonathan Perry on 30 Sep 2016

I've found no matter how many '''' I add, it will only show one additional.

Akash Srivastav on 27 May 2018

My answers are coming correct in MATLAB 2017b but not on this site.

Solution Comments

Solution 6134868

1 Comment

1 Comment

Furkan Atak on 20 Jul 2021

Learn regexprep. It makes such string-related questions easier.

Solution 2201358

1 Comment

1 Comment

Jaya Lee on 9 Apr 2020

weird+1
it shows correct in my local matlab_2019b

Solution 820841

1 Comment

1 Comment

Bas-Jan Zandt on 5 Feb 2016

Matlab's version of backslash plague!

Solution 819816

1 Comment

1 Comment

Erik Zdansky on 3 Feb 2016

The intention was to make a correct preallocation and the fill it without needing to extend the string or reshuffle its content. It would be good to gain more insight into how the size is calculated. Criteria for evaluating code is not only code size but memory and time efficiency, and efficiency in writing and maintaining the code.

Solution 591547

1 Comment

1 Comment

Jonathan Campelli on 4 Mar 2015

I look forward to discerning what that output really is supposed to be. Running into difficulty.

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Problem 35. Quote Doubler

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Problem 35. Quote Doubler

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