1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 package org.apache.commons.math.genetics; 18 19 import java.util.List; 20 21 /** 22 * Interface indicating that the chromosome represents a permutation of objects. 23 * 24 * @param <T> 25 * type of the permuted objects 26 * @since 2.0 27 * @version $Revision: 799857 $ $Date: 2009-08-01 09:07:12 -0400 (Sat, 01 Aug 2009) $ 28 */ 29 public interface PermutationChromosome<T> { 30 31 /** 32 * Permutes the <code>sequence</code> of objects of type T according to the 33 * permutation this chromosome represents. For example, if this chromosome 34 * represents a permutation (3,0,1,2), and the unpermuted sequence is 35 * (a,b,c,d), this yields (d,a,b,c). 36 * 37 * @param sequence 38 * the unpermuted (original) sequence of objects 39 * @return permutation of <code>sequence</code> represented by this 40 * permutation 41 */ 42 public List<T> decode(List<T> sequence); 43 44 }