cn.hutool.core.lang.hash

Class CityHash

java.lang.Object

cn.hutool.core.lang.hash.CityHash

public class CityHash
extends Object

Google发布的Hash计算算法：CityHash64 与 CityHash128。
它们分别根据字串计算 64 和 128 位的散列值。这些算法不适用于加密，但适合用在散列表等处。

代码来自：https://github.com/rolandhe/string-tools
原始算法：https://github.com/google/cityhash

Since:

5.2.5

Author:

hexiufeng

Constructor Summary

Constructors

Constructor and Description
CityHash()

Method Summary

Modifier and Type	Method and Description
static Number128	hash128(byte[] data) 计算128位City Hash值
static Number128	hash128(byte[] data, Number128 seed) 计算128位City Hash值
static int	hash32(byte[] data) 计算32位City Hash值
static long	hash64(byte[] data) 计算64位City Hash值
static long	hash64(byte[] data, long seed) 计算64位City Hash值，种子1使用默认的k2
static long	hash64(byte[] data, long seed0, long seed1) 计算64位City Hash值

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CityHash

public CityHash()

Method Detail

hash32

public static int hash32(byte[] data)

计算32位City Hash值

Parameters:

data - 数据

Returns:

hash值

hash64

public static long hash64(byte[] data)

计算64位City Hash值

Parameters:

data - 数据

Returns:

hash值

hash64

public static long hash64(byte[] data,
                          long seed0,
                          long seed1)

计算64位City Hash值

Parameters:

data - 数据

seed0 - 种子1

seed1 - 种子2

Returns:

hash值

hash64

public static long hash64(byte[] data,
                          long seed)

计算64位City Hash值，种子1使用默认的k2

Parameters:

data - 数据

seed - 种子2

Returns:

hash值

hash128

public static Number128 hash128(byte[] data)

计算128位City Hash值

Parameters:

data - 数据

Returns:

hash值

hash128

public static Number128 hash128(byte[] data,
                                Number128 seed)

计算128位City Hash值

Parameters:

data - 数据

seed - 种子

Returns:

hash值