/*
 * 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.List;

/**
 * Interface indicating that the chromosome represents a permutation of objects.
 * 
 * @param <T>
 *            type of the permuted objects
 * @since 2.0
 * @version $Revision:$ $Date:$
 */
public interface PermutationChromosome<T> {

	/**
	 * Permutes the <code>sequence</code> of objects of type T according to the
	 * permutation this chromosome represents. For example, if this chromosome
	 * represents a permutation (3,0,1,2), and the unpermuted sequence is
	 * (a,b,c,d), this yields (d,a,b,c).
	 * 
	 * @param sequence
	 *            the unpermuted (original) sequence of objects
	 * @return permutation of <code>sequence</code> represented by this
	 *         permutation
	 */
	public List<T> decode(List<T> sequence);

}
