1  #region License Information


2  /* HeuristicLab


3  * Copyright (C) 20022008 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 


22  using System;


23  using System.Collections.Generic;


24  using System.Text;


25  using HeuristicLab.Core;


26  using HeuristicLab.Data;


27 


28  namespace HeuristicLab.Permutation {


29  public class VariableStrengthSwap2Manipulator : VariableStrengthPermutationManipulatorBase {


30  public override string Description {


31  get { return @"Swaps two randomly selected items in the permutation"; }


32  }


33 


34  public static int[] Apply(IRandom random, int[] permutation) {


35  int[] result = (int[])permutation.Clone();


36  int index1, index2, temp;


37 


38  index1 = random.Next(result.Length);


39  index2 = random.Next(result.Length);


40 


41  temp = result[index1];


42  result[index1] = result[index2];


43  result[index2] = temp;


44 


45  return result;


46  }


47 


48  protected override int[] Manipulate(IScope scope, IRandom random, int[] permutation) {


49  return Apply(random, permutation);


50  }


51  }


52  }

