source: branches/2936_GQAPIntegration/HeuristicLab.Problems.GeneralizedQuadraticAssignment/3.3/Operators/Manipulators/SwapEquipmentManipluator.cs @ 16077

Last change on this file since 16077 was 16077, checked in by abeham, 12 months ago

#2936: Added integration branch

File size: 2.5 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2018 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 HeuristicLab.Common;
24using HeuristicLab.Core;
25using HeuristicLab.Encodings.IntegerVectorEncoding;
26using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
27
28namespace HeuristicLab.Problems.GeneralizedQuadraticAssignment {
29
30  [Item("SwapEquipmentManipluator", "Swaps two equipments by placing each in the location of the other.")]
31  [StorableClass]
32  public class SwapEquipmentManipluator : GQAPManipulator {
33
34    [StorableConstructor]
35    protected SwapEquipmentManipluator(bool deserializing) : base(deserializing) { }
36    protected SwapEquipmentManipluator(SwapEquipmentManipluator original, Cloner cloner) : base(original, cloner) { }
37    public SwapEquipmentManipluator()
38      : base() {
39    }
40
41    public override IDeepCloneable Clone(Cloner cloner) {
42      return new SwapEquipmentManipluator(this, cloner);
43    }
44
45    public static void Apply(IRandom random, IntegerVector assignment) {
46      if (assignment.Length < 2) throw new InvalidOperationException("Vector is too small for swap operation.");
47      int equipment1 = random.Next(assignment.Length), equipment2 = random.Next(assignment.Length);
48      int counter = 1;
49      while (assignment[equipment1] == assignment[equipment2] && counter < assignment.Length) {
50        equipment2 = random.Next(assignment.Length);
51        counter++;
52      }
53      int location = assignment[equipment1];
54      assignment[equipment1] = assignment[equipment2];
55      assignment[equipment2] = location;
56    }
57
58    protected override void Manipulate(IRandom random, IntegerVector vector, GQAPInstance problemInstance) {
59      Apply(random, vector);
60    }
61  }
62}
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