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 Boyer 1.5


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Fast string search (indexOf) using the Boyer-Moore algorithm. Incorporate this class into your own Java programs to rapidly search strings.

Use: import com.mindprod.Boyer.Boyer; ... Boyer b = new Boyer("dogcatwombat"); int where = b.indexOf("cat"); or int where = Boyer.indexOf("dogcatwombat","cat"); Boyer-Moore is about twice as fast as String.indexOf when the string you are searching in is 2K or over and the pattern you are searching for is 4 characters or longer. String.indexOf is particularly slow when the pattern begins with a common letter such as "e". Boyer-Moore is fastest when the pattern is long and composed only of uncommon letters, e.g. "z" or "^". If you use a char[] instead of String for your text to be searched, it will run an additional 33% faster. Boyer automatically reverts to String.indexOf when that would be faster.
File Information
File Name Boyer 1.5 added by marko
Submitted Mar 17 2009, 12:16 PM
Last Updated Mar 17 2009, 12:16 PM
File Type  (zip - application/zip)
Screenshot Click here for full screenshot
Statistics
File Size 545.49K (Estimated Download Times)
Views 288
Downloads 16
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Author's Site http://mindprod.com/products1.html#BOYER
Will Run On 98/ME/Xp/Vista/Mac OS X/Linux
Requirements No Information
Mirror No Information
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