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General Info

Hits: 939 visitors

Publisher: Canadian Mind Products

OS Support: Java, Linux, Mac OS X, Unix, Win2000, Win7 x32, Win7 x64, WinServer, WinXP, Win Vista

License: Freeware

Date added: 15 Aug 2010

Last Update: 20 May 2007

Downloads:: 300

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Publisher's description

Fast string search (indexOf) using the Boyer-Moore algorithm.

Fast string search (indexOf) using the Boyer-Moorealgorithm. Incorporate this class into your own Javaprograms to rapidly search strings.use:import com.mindprod.Boyer.Boyer;...Boyer b = new Boyer("dogcatwombat");int where = b.indexOf("cat");orint where = Boyer.indexOf("dogcatwombat","cat");Boyer-Moore is about twice as fast as String.indexOf whenthe string you are searching in is 2K or over and thepattern you are searching for is 4 characters or longer.String.indexOf is particularly slow when the pattern beginswith a common letter such as "e". Boyer-Moore is fastestwhen the pattern is long and composed only of uncommonletters, e.g. "z" or "^". If you use a char[] instead ofString for your text to be searched, it will run anadditional 33% faster.Boyer automatically reverts to String.indexOf when thatwould be faster.

Available Translations:None

Version History

Version 1.5 added on: 20 May 2007

Related Tags:

    Boyer-Moore          string search          search          indexOf          Java          fast string search          string handling      

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