keel.Algorithms.Rule_Learning.C45RulesSA

Class Utilities

java.lang.Object

keel.Algorithms.Rule_Learning.C45RulesSA.Utilities

public class Utilities
extends java.lang.Object

Collection of auxiliar methods.

Since:

JDK1.2

Version:

1.1

Author:

Written by Antonio Alejandro Tortosa (University of Granada) 01/07/2008, Modified by Xavi Solé (La Salle, Ramón Llull University - Barcelona) 16/12/2008

Constructor Summary

Constructors

Constructor and Description
Utilities()

Method Summary

Modifier and Type	Method and Description
static double	log2(double a) Returns the logarithm of a for base 2.
static void	mergeSort(double[] theArray, int nElems) Mergesort algorithm for an array of long integers.
static void	mergeSort(long[] theArray, int nElems) Mergesort algorithm for an array of long integers.

Methods inherited from class java.lang.Object

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

Constructor Detail

Utilities

public Utilities()

Method Detail

mergeSort

public static void mergeSort(long[] theArray,
                             int nElems)

Mergesort algorithm for an array of long integers.

Parameters:

theArray - long[] the Array to sort

nElems - int size of theArray

mergeSort

public static void mergeSort(double[] theArray,
                             int nElems)

Mergesort algorithm for an array of long integers.

Parameters:

theArray - double[] the Array to sort

nElems - int size of theArray

log2

public static double log2(double a)

Returns the logarithm of a for base 2.

Parameters:

a - a double

Returns:

the logarithm for base 2