org.pinus4j.utils

Class HashUtil

java.lang.Object

org.pinus4j.utils.HashUtil

public class HashUtil
extends Object

Hash算法工具.

Author:

duanbn

Field Summary

Fields

Modifier and Type	Field and Description
(package private) static int	M_MASK
(package private) static int	M_SHIFT

Constructor Summary

Constructors

Constructor and Description
HashUtil()

Method Summary

Modifier and Type	Method and Description
static int	additiveHash(String key) 加法Hash算法.
static int	APHash(String str) AP hash算法.
static int	bernstein(String key) bernstein hash
static int	BKDRHash(String str) BKDR hash算法.
static int	DEKHash(String str) DEK hash算法.
static int	DJBHash(String str) DJB hash算法.
static int	ELFHash(String str) ELF算法.
static int	FNVHash(byte[] data) 32位的FNV算法
static int	FNVHash1(byte[] data) 改进的32位FNV算法1
static int	FNVHash1(String data) 改进的32位FNV算法1
static int	intHash(int key) int hash
static int	java(String str) Java自带hash算法.
static int	JSHash(String str) JS hash算法o
static long	mixHash(String str) 混合hash算法，输出64位的值
static int	oneByOneHash(String key) one by one Hash
static int	PJWHash(String str) PJW算法
static int	rotatingHash(String key) 旋转Hash
static int	RSHash(String str) RS算法hash
static int	SDBMHash(String str) SDBM hash算法.

Methods inherited from class java.lang.Object

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

Field Detail

M_MASK

static int M_MASK

M_SHIFT

static int M_SHIFT

Constructor Detail

HashUtil

public HashUtil()

Method Detail

additiveHash

public static int additiveHash(String key)

加法Hash算法.

Returns:

hash值

rotatingHash

public static int rotatingHash(String key)

旋转Hash

Returns:

hash值

oneByOneHash

public static int oneByOneHash(String key)

one by one Hash

Returns:

hash值

bernstein

public static int bernstein(String key)

bernstein hash

Returns:

hash值

FNVHash

public static int FNVHash(byte[] data)

32位的FNV算法

Returns:

hash值

FNVHash1

public static int FNVHash1(byte[] data)

改进的32位FNV算法1

Returns:

hash值

FNVHash1

public static int FNVHash1(String data)

改进的32位FNV算法1

Returns:

hash值

intHash

public static int intHash(int key)

int hash

Returns:

hash值

RSHash

public static int RSHash(String str)

RS算法hash

Returns:

hash值

JSHash

public static int JSHash(String str)

JS hash算法o

Returns:

hash值

PJWHash

public static int PJWHash(String str)

PJW算法

Returns:

hash值

ELFHash

public static int ELFHash(String str)

ELF算法.

Returns:

hash值

BKDRHash

public static int BKDRHash(String str)

BKDR hash算法.

Returns:

hash值

SDBMHash

public static int SDBMHash(String str)

SDBM hash算法.

Returns:

hash值

DJBHash

public static int DJBHash(String str)

DJB hash算法.

Returns:

hash值.

DEKHash

public static int DEKHash(String str)

DEK hash算法.

Returns:

hash值

APHash

public static int APHash(String str)

AP hash算法.

Returns:

hash值

java

public static int java(String str)

Java自带hash算法.

Returns:

hash值

mixHash

public static long mixHash(String str)

混合hash算法，输出64位的值

Returns:

hash值