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stringCollapser

07 Feb 2010

Code covered by the BSD License

Collapses a long comma separated string using a counter for repeated sub-strings

File Information
Description	Example 1- Input string = 'abc,abc,abc,dcf,dcf,ef'. output string ='3abc,2dcf,1ef' Example 2- Input string = 'xyzr,abdc,abdc,haha,haha'. output string ='1xyzr,2abdc,2haha' Explanation: This function collapses a comma separated long string, containing sub-strings, into a possibly smaller string by replacing repeated sub-strings by counts of repetitions of substrings.
MATLAB release	MATLAB 7.8 (R2009a)
Zip File Content
Other Files	license.txt, strCollapser.m

Tags for This File
Everyone's Tags	abstraction, count strings, grammar, number string, signal processing, string collapse, string manipulation, strings, tags, timeseries
Tags I've Applied
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Comments and Ratings (3)
12 Feb 2010	Oleg Komarov	Unmeaningful H1 line, poor help but at least the example is easy to understand. Author, contact and creation date are shown but there is no need to include those info in the help block. I'm not against loops but you should really learn preallocation: % A: 0.610 MB A = repmat(',abc,abc,abc,ghf,ghf,der,der,dfg',1,10000); tic OUT = strCollapser(A); toc % Elapsed time is 60.312876 seconds. % Matrix indexing is a useful chapter of online documentation str(length(str))~=',' where length(str) can be replaced with end Completely useless the last line of code: %str; %strParsed; str1; No comments in the body. I can't think of any use for this fcn, the output again is too complex and unmanageable.
16 Feb 2010	Avinash Rude	Oleg Komarov: First, Thanks for the careful scrutiny of my code. I will address some of your points further: >>Unmeaningful H1 line, poor help but at least the example is easy to understand. Author, contact and creation date are shown but there is no need to include those info in the help block. Okay, will correct that. >> I'm not against loops but you should really learn preallocation: % A: 0.610 MB A = repmat(',abc,abc,abc,ghf,ghf,der,der,dfg',1,10000); Thanks for this preallocation tip. >>tic OUT = strCollapser(A); toc >> % Elapsed time is 60.312876 seconds. How did you calculate the time? Let me know. >>Completely useless the last line of code: %str; %strParsed; str1; Opps! Should've deleted that... It is a remnant while the fuction was written. >>No comments in the body. Will include them. >>I can't think of any use for this fcn, the output again is too complex and unmanageable. True, that it gives an unmanageable string. However, it served my purpose of collapsing a very long string with repeated substrings.
17 Feb 2010	Oleg Komarov	help tic % for time calculation preallocation: http://www.mathworks.com/access/helpdesk/help/techdoc/matlab_prog/f8-784135.html#f8-793781 Regards

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Tag Activity for this File
Tag	Applied By	Date/Time
string collapse	Avinash Rude	08 Feb 2010 12:14:10
string manipulation	Avinash Rude	08 Feb 2010 12:14:10
number string	Avinash Rude	08 Feb 2010 12:14:10
count strings	Avinash Rude	08 Feb 2010 12:14:10
strings	Avinash Rude	08 Feb 2010 12:14:10
signal processing	Avinash Rude	08 Feb 2010 12:14:10
timeseries	Avinash Rude	08 Feb 2010 12:14:10
tags	Avinash Rude	08 Feb 2010 12:14:10
abstraction	Avinash Rude	08 Feb 2010 12:14:10
grammar	Avinash Rude	08 Feb 2010 12:14:10

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