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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.commons.math3.genetics;
import org.apache.commons.math3.exception.NumberIsTooLargeException;
/**
* A collection of chromosomes that facilitates generational evolution.
*
* @since 2.0
*/
public interface Population extends Iterable<Chromosome> {
/**
* Access the current population size.
*
* @return the current population size.
*/
int getPopulationSize();
/**
* Access the maximum population size.
*
* @return the maximum population size.
*/
int getPopulationLimit();
/**
* Start the population for the next generation.
*
* @return the beginnings of the next generation.
*/
Population nextGeneration();
/**
* Add the given chromosome to the population.
*
* @param chromosome the chromosome to add.
* @throws NumberIsTooLargeException if the population would exceed the population limit when
* adding this chromosome
*/
void addChromosome(Chromosome chromosome) throws NumberIsTooLargeException;
/**
* Access the fittest chromosome in this population.
*
* @return the fittest chromosome.
*/
Chromosome getFittestChromosome();
}
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