Package org.uma.jmetal.util

Class ListUtils

java.lang.Object

org.uma.jmetal.util.ListUtils

public class ListUtils
extends Object

Constructor Summary

Constructors

Constructor	Description
ListUtils()

Method Summary

Modifier and Type	Method	Description
static <S> boolean	listAreEquals(List<S> firstList, List<S> secondList)	Compares two lists to determine if they are equals
static <S> List<S>	randomSelectionWithoutReplacement(int numberOfElementsSelect, List<S> solutionList)	Selects N random elements from a list without replacement.
static <S> List<S>	randomSelectionWithoutReplacement(int numberOfElementsToSelect, List<S> list, BoundedRandomGenerator<Integer> randomGenerator)	Selects N random elements from a list without replacement.
static <S> List<S>	randomSelectionWithReplacement(int numberOfElementsSelect, List<S> solutionList)	Selects N random elements from a list with replacement.
static <S> List<S>	randomSelectionWithReplacement(int numberOfElementsToSelect, List<S> list, BoundedRandomGenerator<Integer> randomGenerator)	Selects N random elements from a list with replacement.

Methods inherited from class java.lang.Object

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

Constructor Details

ListUtils

public ListUtils()

Method Details

randomSelectionWithoutReplacement

public static <S> List<S> randomSelectionWithoutReplacement(int numberOfElementsSelect,
 List<S> solutionList)

Selects N random elements from a list without replacement. The size of the list must be equal or higher than the number of elements to select.

randomSelectionWithoutReplacement

public static <S> List<S> randomSelectionWithoutReplacement(int numberOfElementsToSelect,
 List<S> list,
 BoundedRandomGenerator<Integer> randomGenerator)

Selects N random elements from a list without replacement. The size of the list must be equal or higher than the number of elements to select.

Parameters:

list - The list

randomGenerator - The random number generator

Returns:

The selected elements

randomSelectionWithReplacement

public static <S> List<S> randomSelectionWithReplacement(int numberOfElementsSelect,
 List<S> solutionList)

Selects N random elements from a list with replacement. The size of the list can be smaller than the number of requested elements.

randomSelectionWithReplacement

public static <S> List<S> randomSelectionWithReplacement(int numberOfElementsToSelect,
 List<S> list,
 BoundedRandomGenerator<Integer> randomGenerator)

Selects N random elements from a list with replacement. The size of the list can be smaller than the number of requested elements.

Parameters:

list - The list

randomGenerator - The random number generator

Returns:

The selected elements

listAreEquals

public static <S> boolean listAreEquals(List<S> firstList,
 List<S> secondList)

Compares two lists to determine if they are equals

Parameters:

firstList - A list

secondList - A list

Returns:

true if both lists contain the same elements (in any order), false in other case