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ortools-clone/ortools/sat/samples/SimpleSolveSampleSat.java

48 lines
1.6 KiB
Java

// Copyright 2010-2018 Google LLC
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
import com.google.ortools.sat.CpModel;
import com.google.ortools.sat.CpSolver;
import com.google.ortools.sat.CpSolverStatus;
import com.google.ortools.sat.IntVar;
/** Solve a simple problem with three variables and one different constraint. */
public class SimpleSolveSampleSat {
static {
System.loadLibrary("jniortools");
}
public static void main(String[] args) throws Exception {
// Create the model.
CpModel model = new CpModel();
// Create the variables.
int numVals = 3;
IntVar x = model.newIntVar(0, numVals - 1, "x");
IntVar y = model.newIntVar(0, numVals - 1, "y");
IntVar z = model.newIntVar(0, numVals - 1, "z");
// Create the constraints.
model.addDifferent(x, y);
// Create a solver and solve the model.
CpSolver solver = new CpSolver();
CpSolverStatus status = solver.solve(model);
if (status == CpSolverStatus.FEASIBLE) {
System.out.println("x = " + solver.value(x));
System.out.println("y = " + solver.value(y));
System.out.println("z = " + solver.value(z));
}
}
}