private static void BasicLsWithFilter()
{
Console.WriteLine("BasicLsWithFilter");
Solver solver = new Solver("BasicLs");
IntVar[] vars = solver.MakeIntVarArray(4, 0, 4, "vars");
IntVar sum_var = vars.Sum().Var();
OptimizeVar obj = sum_var.Minimize(1);
DecisionBuilder db =
solver.MakePhase(vars, Solver.CHOOSE_FIRST_UNBOUND, Solver.ASSIGN_MAX_VALUE);
MoveOneVar move_one_var = new MoveOneVar(vars);
SumFilter filter = new SumFilter(vars);
IntVarLocalSearchFilter[] filters = new IntVarLocalSearchFilter[] { filter };
LocalSearchFilterManager filter_manager = new LocalSearchFilterManager(filters);
LocalSearchPhaseParameters ls_params =
solver.MakeLocalSearchPhaseParameters(sum_var, move_one_var, db, null, filter_manager);
DecisionBuilder ls = solver.MakeLocalSearchPhase(vars, db, ls_params);
SolutionCollector collector = solver.MakeLastSolutionCollector();
collector.AddObjective(sum_var);
SearchMonitor log = solver.MakeSearchLog(1000, obj);
solver.Solve(ls, collector, obj, log);
Console.WriteLine("Objective value = {0}", collector.ObjectiveValue(0));
}
private static void BasicLns()
{
Console.WriteLine("BasicLns");
Solver solver = new Solver("BasicLns");
IntVar[] vars = solver.MakeIntVarArray(4, 0, 4, "vars");
IntVar sum_var = vars.Sum().Var();
OptimizeVar obj = sum_var.Minimize(1);
DecisionBuilder db = solver.MakePhase(vars,
Solver.CHOOSE_FIRST_UNBOUND,
Solver.ASSIGN_MAX_VALUE);
OneVarLns one_var_lns = new OneVarLns(vars);
LocalSearchPhaseParameters ls_params =
solver.MakeLocalSearchPhaseParameters(one_var_lns, db);
DecisionBuilder ls = solver.MakeLocalSearchPhase(vars, db, ls_params);
SolutionCollector collector = solver.MakeLastSolutionCollector();
collector.AddObjective(sum_var);
SearchMonitor log = solver.MakeSearchLog(1000, obj);
solver.Solve(ls, collector, obj, log);
Console.WriteLine("Objective value = {0}", collector.ObjectiveValue(0));
}
