source: branches/MemPRAlgorithm/HeuristicLab.Encodings.LinearLinkageEncoding/3.4/Moves/SplitMove.cs @ 14492

Last change on this file since 14492 was 14492, checked in by abeham, 4 years ago

#2701:

  • Updated LLE encoding
    • Made folder for version 3.4
    • Added conversion from and to LLE-b representation (back-links)
    • Updated moves and movegenerator to replace bidirectionaldictionary with LLE-b representation
  • Updated MemPR (linear linkage)
    • Updated tabu walk
  • Added test for conversion between LLE-e and LLE and LLE-b and LLE
  • Updated test for move apply/undo and added test for applying in sequence
File size: 1.8 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2016 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;
23
24namespace HeuristicLab.Encodings.LinearLinkageEncoding {
25  public class SplitMove : Move {
26
27    private int nextItem;
28
29    public SplitMove(int item) {
30      Item = item;
31      nextItem = -1;
32    }
33
34    public override void Apply(LinearLinkage lle) {
35      if (lle[Item] == Item) throw new ArgumentException("Move conditions have changed, group is already split at " + Item);
36      nextItem = lle[Item];
37      lle[Item] = Item;
38    }
39
40    public override void Undo(LinearLinkage lle) {
41      if (lle[Item] != Item) throw new ArgumentException("Move conditions have changed, group no longer terminates at " + Item);
42      if (nextItem < 0) throw new InvalidOperationException("Cannot undo move that has not been applied first.");
43      lle[Item] = nextItem;
44    }
45
46    public override void ApplyToLLEb(int[] lleb) {
47      if (nextItem < 0) throw new InvalidOperationException("Cannot undo move that has not been applied first to LLE.");
48      lleb[nextItem] = nextItem;
49    }
50  }
51}
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