42d7c276ab
- Fix examples using MPConstraint::Activity instead of MPSolver - Move all examples to exmaples/dotnet - remove netfx sub-directories - Add all examples to target test_dotnet - still few disabled since they are too long - Add tools/generate_examples_csproj.sh to generate .*proj files
92 lines
2.5 KiB
C#
92 lines
2.5 KiB
C#
//
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// Copyright 2012 Hakan Kjellerstrand
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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using System;
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using Google.OrTools.ConstraintSolver;
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public class LeastDiff
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{
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/**
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*
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* Solve the Least diff problem
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* For more info, see http://www.hakank.org/google_or_tools/least_diff.py
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*
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*/
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private static void Solve()
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{
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Solver solver = new Solver("LeastDiff");
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//
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// Decision variables
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//
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IntVar A = solver.MakeIntVar(0, 9, "A");
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IntVar B = solver.MakeIntVar(0, 9, "B");
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IntVar C = solver.MakeIntVar(0, 9, "C");
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IntVar D = solver.MakeIntVar(0, 9, "D");
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IntVar E = solver.MakeIntVar(0, 9, "E");
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IntVar F = solver.MakeIntVar(0, 9, "F");
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IntVar G = solver.MakeIntVar(0, 9, "G");
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IntVar H = solver.MakeIntVar(0, 9, "H");
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IntVar I = solver.MakeIntVar(0, 9, "I");
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IntVar J = solver.MakeIntVar(0, 9, "J");
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IntVar[] all = new IntVar[] {A,B,C,D,E,F,G,H,I,J};
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int[] coeffs = {10000,1000,100,10,1};
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IntVar x = new IntVar[]{A,B,C,D,E}.ScalProd(coeffs).Var();
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IntVar y = new IntVar[]{F,G,H,I,J}.ScalProd(coeffs).Var();
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IntVar diff = (x - y).VarWithName("diff");
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//
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// Constraints
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//
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solver.Add(all.AllDifferent());
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solver.Add(A > 0);
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solver.Add(F > 0);
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solver.Add(diff > 0);
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//
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// Objective
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//
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OptimizeVar obj = diff.Minimize(1);
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//
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// Search
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//
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DecisionBuilder db = solver.MakePhase(all,
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Solver.CHOOSE_PATH,
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Solver.ASSIGN_MIN_VALUE);
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solver.NewSearch(db, obj);
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while (solver.NextSolution()) {
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Console.WriteLine("{0} - {1} = {2} ({3}",x.Value(), y.Value(), diff.Value(), diff.ToString());
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}
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Console.WriteLine("\nSolutions: {0}", solver.Solutions());
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Console.WriteLine("WallTime: {0}ms", solver.WallTime());
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Console.WriteLine("Failures: {0}", solver.Failures());
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Console.WriteLine("Branches: {0} ", solver.Branches());
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solver.EndSearch();
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}
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public static void Main(String[] args)
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{
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Solve();
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}
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}
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