org.uncommons.watchmaker.framework.factories
Class ListPermutationFactory<T>

java.lang.Object
  org.uncommons.watchmaker.framework.factories.AbstractCandidateFactory<List<T>>
      org.uncommons.watchmaker.framework.factories.ListPermutationFactory<T>

Type Parameters:

T - The component type of the lists created by this factory.

All Implemented Interfaces:

CandidateFactory<List<T>>

public class ListPermutationFactory<T>
extends AbstractCandidateFactory<List<T>>

Generates random candidates from a set of elements. Each candidate is a random permutation of the full set of elements.

Author:

Daniel Dyer

Constructor Summary

ListPermutationFactory(List<T> elements)
Creates a factory that creates lists that contain each of the specified elements exactly once.

Method Summary

List<T>

generateRandomCandidate(Random rng) Generates a random permutation from the configured elements.

Methods inherited from class org.uncommons.watchmaker.framework.factories.AbstractCandidateFactory

generateInitialPopulation, generateInitialPopulation

Methods inherited from class java.lang.Object

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

Constructor Detail

ListPermutationFactory

public ListPermutationFactory(List<T> elements)

Creates a factory that creates lists that contain each of the specified elements exactly once. The ordering of those elements within generated lists is random.

Parameters:

elements - The elements to permute.

Method Detail

generateRandomCandidate

public List<T> generateRandomCandidate(Random rng)

Generates a random permutation from the configured elements.

Parameters:

rng - A source of randomness used to generate the random permutation.

Returns:

A random permutation.