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Categories :
Web Development > Java & JavaScript
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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. Boyerr-Moore is about twice as fast as String.indexOf when the string you are searching in is 2K.
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Description From Publisher
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.
Supported OS
Win98,WinME,WinNT 3.x,WinNT 4.x,Windows2000,WinXP,Windows2003,Windows Vista Star
Related Keywords
Boyer-Moore Boyer-Moore string search string search search search indexOf indexOf Java Java fast string search fast string search string handling string handling
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