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source: branches/HeuristicLab.BinPacking/HeuristicLab.Problems.BinPacking/3.3/Encodings/GroupingVector/Moves/ChangeGrouping/ExhaustiveChangeGroupingMoveGenerator.cs @ 9563

Last change on this file since 9563 was 9563, checked in by jhelm, 11 years ago

#1966: Implemented additional Operator-Wrappers for PackingSequence and GroupingVector; Implemented additional problem-class for Rosenbauer-Problemstatement; Added marker-interfaces for decoder-types;

File size: 2.9 KB
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1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2012 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using System;
23using System.Collections.Generic;
24using HeuristicLab.Common;
25using HeuristicLab.Core;
26using HeuristicLab.Optimization;
27using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
28
29namespace HeuristicLab.Encodings.PackingEncoding.GroupingVector {
30  [Item("Exhaustive Change Grouping Move Generator", "Generates all possible ChangeGrouping moves from a given groupingVector.")]
31  [StorableClass]
32  public class ExhaustiveChangeGroupingMoveGenerator : ChangeGroupingMoveGenerator, IExhaustiveMoveGenerator {
33    [StorableConstructor]
34    protected ExhaustiveChangeGroupingMoveGenerator(bool deserializing) : base(deserializing) { }
35    protected ExhaustiveChangeGroupingMoveGenerator(ExhaustiveChangeGroupingMoveGenerator original, Cloner cloner) : base(original, cloner) { }
36    public ExhaustiveChangeGroupingMoveGenerator() : base() { }
37
38    public override IDeepCloneable Clone(Cloner cloner) {
39      return new ExhaustiveChangeGroupingMoveGenerator(this, cloner);
40    }
41
42    public static IEnumerable<ChangeGroupingMove> Generate(GroupingVectorEncoding groupingVector, int nrOfBins) {
43      for (int i = 0; i < groupingVector.GroupingVector.Length; i++)
44        for (int j = 0; j < nrOfBins; j++) {
45          if (j != groupingVector.GroupingVector[i])
46            yield return new ChangeGroupingMove(i, j, groupingVector);
47        }
48    }
49
50    public static ChangeGroupingMove[] Apply(GroupingVectorEncoding groupingVector) {
51      int nrOfBins = 0;
52      foreach (int binNr in groupingVector.GroupingVector) {
53        if (binNr > nrOfBins)
54          nrOfBins = binNr;
55      }
56      nrOfBins++;
57
58      int totalMoves = (groupingVector.GroupingVector.Length) * (nrOfBins - 1);
59      ChangeGroupingMove[] moves = new ChangeGroupingMove[totalMoves];
60      int count = 0;
61      foreach (ChangeGroupingMove move in Generate(groupingVector, nrOfBins)) {
62        moves[count++] = move;
63      }
64      return moves;
65    }
66
67    protected override ChangeGroupingMove[] GenerateMoves(GroupingVectorEncoding groupingVector) {
68      return Apply(groupingVector);
69    }
70  }
71}
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