org.itadaki.bzip2

Class MoveToFront

java.lang.Object

org.itadaki.bzip2.MoveToFront

public class MoveToFront
extends Object

A 256 entry Move To Front transform

Constructor Summary

Constructors

Constructor and Description
MoveToFront()

Method Summary

Methods

Modifier and Type	Method and Description
byte	indexToFront(int index) Gets the value from a given index and moves it to the front of the MTF list (inverse Move To Front transform)
int	valueToFront(byte value) Moves a value to the head of the MTF list (forward Move To Front transform)

Methods inherited from class java.lang.Object

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

Constructor Detail

MoveToFront

public MoveToFront()

Method Detail

valueToFront

public int valueToFront(byte value)

Moves a value to the head of the MTF list (forward Move To Front transform)

Parameters:

value - The value to move

Returns:

The position the value moved from

indexToFront

public byte indexToFront(int index)

Gets the value from a given index and moves it to the front of the MTF list (inverse Move To Front transform)

Parameters:

index - The index to move

Returns:

The value at the given index