Jaro-Winkler Distance

发现commons-lang 中有实现：

StringUtils.class

public static double getJaroWinklerDistance(final CharSequence first, final CharSequence second) {
    final double DEFAULT_SCALING_FACTOR = 0.1;

    if (first == null || second == null) {
        throw new IllegalArgumentException("Strings must not be null");
    }

    final double jaro = score(first,second);
    final int cl = commonPrefixLength(first, second);
    final double matchScore = Math.round((jaro + (DEFAULT_SCALING_FACTOR * cl * (1.0 - jaro))) *100.0)/100.0;

    return  matchScore;
}