85 lines
2.4 KiB
C#
85 lines
2.4 KiB
C#
// Copyright 2010-2024 Google LLC
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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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// [START program]
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using System;
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using Google.OrTools.Sat;
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// [START print_solution]
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public class VarArraySolutionPrinter : CpSolverSolutionCallback
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{
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public VarArraySolutionPrinter(IntVar[] variables)
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{
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variables_ = variables;
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}
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public override void OnSolutionCallback()
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{
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{
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Console.WriteLine(String.Format("Solution #{0}: time = {1:F2} s", solution_count_, WallTime()));
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foreach (IntVar v in variables_)
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{
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Console.WriteLine(String.Format(" {0} = {1}", v.ToString(), Value(v)));
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}
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solution_count_++;
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}
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}
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public int SolutionCount()
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{
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return solution_count_;
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}
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private int solution_count_;
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private IntVar[] variables_;
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}
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// [END print_solution]
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public class SearchForAllSolutionsSampleSat
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{
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static void Main()
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{
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// Creates the model.
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// [START model]
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CpModel model = new CpModel();
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// [END model]
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// Creates the variables.
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// [START variables]
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int num_vals = 3;
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IntVar x = model.NewIntVar(0, num_vals - 1, "x");
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IntVar y = model.NewIntVar(0, num_vals - 1, "y");
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IntVar z = model.NewIntVar(0, num_vals - 1, "z");
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// [END variables]
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// Adds a different constraint.
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// [START constraints]
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model.Add(x != y);
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// [END constraints]
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// Creates a solver and solves the model.
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// [START solve]
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CpSolver solver = new CpSolver();
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VarArraySolutionPrinter cb = new VarArraySolutionPrinter(new IntVar[] { x, y, z });
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// Search for all solutions.
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solver.StringParameters = "enumerate_all_solutions:true";
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// And solve.
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solver.Solve(model, cb);
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// [END solve]
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Console.WriteLine($"Number of solutions found: {cb.SolutionCount()}");
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}
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}
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// [END program]
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