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lexcmp

19 Feb 2009 (Updated 14 Sep 2009)

Fast C-style array/string comparison (by lexical ordering)

File Information
Description	lexcmp(s1,s2) returns: -1, if s1<s2 0, if s1=s2 1, if s1>s2 where the comparison is made on the first elements that differ. s1 and s2 can be strings, numeric arrays or other compatible objects (see the help for more details). Although this has already been done a few times before, this implementation is among the most efficient and the core routine is in a form that easily translates to mex/C (something similar as a built-in function would be nice to have). The core function is similar to S. Helsen's strcmpc.m with some performance tweaks. The function is vectorized for cell array input. Recent versions allow inf/nan values.
Acknowledgements	The author wishes to acknowledge the following in the creation of this submission: Compare Strings (C-convention) This submission has inspired the following: String comparison, multisetdiff, jointable
MATLAB release	MATLAB 7.5 (R2007b)
Zip File Content
Other Files	lexcmp.m, license.txt

Tags for This File
Everyone's Tags	compare, comparison, lexical, string, string comparison
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Updates
14 Sep 2009	added support for inf/nan values in arrays and improved help text

Tag Activity for this File
Tag	Applied By	Date/Time
string	Ben Petschel	19 Feb 2009 16:09:49
compare	Ben Petschel	19 Feb 2009 16:09:49
comparison	Ben Petschel	19 Feb 2009 16:09:49
string comparison	Ben Petschel	19 Feb 2009 16:09:49
lexical	Ben Petschel	19 Feb 2009 16:09:49

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