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Commons Math example source code file (BinaryChromosome.java)

This example Commons Math source code file (BinaryChromosome.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Commons Math tags/keywords

abstractlistchromosome, arraylist, binarychromosome, binarychromosome, elements, invalidrepresentationexception, invalidrepresentationexception, list, list, override, override, util

The Commons Math BinaryChromosome.java source code

/*
 * 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.math.genetics;

import java.util.ArrayList;
import java.util.List;


/**
 * Chromosome represented by a vector of 0s and 1s.
 *
 * @version $Revision: 811685 $ $Date: 2009-09-05 13:36:48 -0400 (Sat, 05 Sep 2009) $
 * @since 2.0
 */
public abstract class BinaryChromosome extends AbstractListChromosome<Integer> {

    /**
     * Constructor.
     * @param representation list of {0,1} values representing the chromosome
     */
    public BinaryChromosome(List<Integer> representation) {
        super(representation);
    }

    /**
     * Constructor.
     * @param representation array of {0,1} values representing the chromosome
     */
    public BinaryChromosome(Integer[] representation) {
        super(representation);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    protected void checkValidity(List<Integer> chromosomeRepresentation) throws InvalidRepresentationException {
        for (int i : chromosomeRepresentation) {
            if (i < 0 || i >1)
                throw new InvalidRepresentationException("Elements can be only 0 or 1.");
        }
    }

    /**
     * Returns a representation of a random binary array of length <code>length.
     * @param length length of the array
     * @return a random binary array of length <code>length
     */
    public static List<Integer> randomBinaryRepresentation(int length) {
        // random binary list
        List<Integer> rList= new ArrayList (length);
        for (int j=0; j<length; j++) {
            rList.add(GeneticAlgorithm.getRandomGenerator().nextInt(2));
        }
        return rList;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    protected boolean isSame(Chromosome another) {
        // type check
        if (! (another instanceof BinaryChromosome))
            return false;
        BinaryChromosome anotherBc = (BinaryChromosome) another;
        // size check
        if (getLength() != anotherBc.getLength())
            return false;

        for (int i=0; i< getRepresentation().size(); i++) {
            if (!(getRepresentation().get(i).equals(anotherBc.getRepresentation().get(i))))
                return false;
        }
        // all is ok
        return true;
    }
}

Other Commons Math examples (source code examples)

Here is a short list of links related to this Commons Math BinaryChromosome.java source code file:

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