/cityhash

Primary LanguageJava

cityhash

real java version implementation of cityhash

usage

mvn clean install

something you need to know

this is motivated by CityHash-For-Java but seems the author did NOT strictly follow the google cityhash algorithm. And it will generate different output result for some input with python and c++ version. (ignore this if you don't care about cross-language)

python version

>>> from cityhash import CityHash64WithSeed
>>> input = "1234567890"
>>> hash = CityHash64WithSeed(input)
>>> print("%s\t%x\t%d" % (input, hash, hash))
1234567890      4fabad57d84b98c1        5740872742816422081

java version

public static void main(String[] args) {
    CityHash hasher = new CityHash();

    String s1 = "1234567890";
    long hash1 = hasher.hash64WithSeed(s1, 0);
    System.out.printf("%s\t%s\t%d\n", s1, Long.toHexString(hash1), hash1);
}

1234567890      4fabad57d84b98c1        5740872742816422081