de.lmu.ifi.dbs.elki.utilities

Class Util

java.lang.Object

de.lmu.ifi.dbs.elki.utilities.Util

public final class Util
extends java.lang.Object

This class collects various static helper methods. For helper methods related to special application fields see other utilities classes.

Since:

0.1

Author:

Erich Schubert

Field Summary

Fields

Modifier and Type	Field and Description
private static long	HASHPRIME Prime number used in hash code computation.

Constructor Summary

Constructors

Modifier	Constructor and Description
private	Util() Fake constructor: do not instantiate.

Method Summary

Modifier and Type	Method and Description
static int	mixHashCodes(int... hash) Mix multiple hashcodes into one.
static int	mixHashCodes(int hash1, int hash2) Mix multiple hashcodes into one.
static int	mixHashCodes(int hash1, int hash2, int hash3) Mix multiple hashcodes into one.

Methods inherited from class java.lang.Object

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

Field Detail

HASHPRIME

private static final long HASHPRIME

Prime number used in hash code computation.

See Also:

Constant Field Values

Constructor Detail

Util

private Util()

Fake constructor: do not instantiate.

Method Detail

mixHashCodes

public static int mixHashCodes(int hash1,
                               int hash2)

Mix multiple hashcodes into one.

Parameters:

hash1 - First hashcode to mix

hash2 - Second hashcode to mix

Returns:

Mixed hash code

mixHashCodes

public static int mixHashCodes(int hash1,
                               int hash2,
                               int hash3)

Mix multiple hashcodes into one.

Parameters:

hash1 - First hashcode to mix

hash2 - Second hashcode to mix

hash3 - Third hashcode to mix

Returns:

Mixed hash code

mixHashCodes

public static int mixHashCodes(int... hash)

Mix multiple hashcodes into one.

Parameters:

hash - Hashcodes to mix

Returns:

Mixed hash code