Beanshell for calculating Levenshtein distance of two input strings

levenshtein.bsh

import org.apache.commons.lang.StringUtils;
import java.text.DecimalFormat;

double ld = StringUtils.getLevenshteinDistance(text1, text2);
double avglen = ((double)text1.length()+(double)text2.length())/2.0;
double m = 1.0-(ld/avglen);
double normVal = (m<0)?0.0:m;
float f = (float) normVal * 100;
DecimalFormat s = new DecimalFormat("##.##");
normalized_levenshtein_distance = s.format(f);