static void Main()
{
KnapsackSolver solver = new KnapsackSolver(
KnapsackSolver.SolverType.KNAPSACK_MULTIDIMENSION_BRANCH_AND_BOUND_SOLVER, "test");
long[] profits = { 360, 83, 59, 130, 431, 67, 230, 52, 93,
125, 670, 892, 600, 38, 48, 147, 78, 256,
63, 17, 120, 164, 432, 35, 92, 110, 22,
42, 50, 323, 514, 28, 87, 73, 78, 15,
26, 78, 210, 36, 85, 189, 274, 43, 33,
10, 19, 389, 276, 312 };
long[,] weights = { { 7, 0, 30, 22, 80, 94, 11, 81, 70,
64, 59, 18, 0, 36, 3, 8, 15, 42,
9, 0, 42, 47, 52, 32, 26, 48, 55,
6, 29, 84, 2, 4, 18, 56, 7, 29,
93, 44, 71, 3, 86, 66, 31, 65, 0,
79, 20, 65, 52, 13 } };
long[] capacities = { 850 };
long optimalProfit = 7534;
Console.WriteLine("Solving knapsack with " + profits.Length +
" items, and " + weights.GetLength(0) + " dimension");
solver.Init(profits, weights, capacities);
long computedProfit = solver.Solve();
Console.WriteLine("Optimal Profit = " + computedProfit + ", expected = " +
optimalProfit);
}
public void ItemsZeroValueCounterSolverTest()
{
int[] value = new int[90];
int[] weight = new int[90];
int capacity = 1000;
for (int i = 0; i < weight.Length; i++)
{
weight[i] = 10;
value[i] = 0;
}
//act
var result = KnapsackSolver.Solve(capacity, weight, value, weight.Length);
var selection = result.selection;
var message = "";
var selectedItems = string.Join(" ", selection);
message += $"SELECTION [{result.selection.Count}] : {selectedItems}";
Debug.Log($"RESULT {result.maxValue} Selection:\n {message}");
Assert.That(result.selection.Count == 0);
}
static void Main()
{
// [START solver]
KnapsackSolver solver = new KnapsackSolver(
KnapsackSolver.SolverType.KNAPSACK_MULTIDIMENSION_BRANCH_AND_BOUND_SOLVER, "test");
// [END solver]
// [START data]
long[] values = { 360, 83, 59, 130, 431, 67, 230, 52, 93,
125, 670, 892, 600, 38, 48, 147, 78, 256,
63, 17, 120, 164, 432, 35, 92, 110, 22,
42, 50, 323, 514, 28, 87, 73, 78, 15,
26, 78, 210, 36, 85, 189, 274, 43, 33,
10, 19, 389, 276, 312 };
long[,] weights = { { 7, 0, 30, 22, 80, 94, 11, 81, 70,
64, 59, 18, 0, 36, 3, 8, 15, 42,
9, 0, 42, 47, 52, 32, 26, 48, 55,
6, 29, 84, 2, 4, 18, 56, 7, 29,
93, 44, 71, 3, 86, 66, 31, 65, 0,
79, 20, 65, 52, 13 } };
long[] capacities = { 850 };
// [END data]
// [START print_solution]
Console.WriteLine("Solving knapsack with " + values.Length +
" items, and " + weights.GetLength(0) + " dimension");
solver.Init(values, weights, capacities);
long computedValue = solver.Solve();
Console.WriteLine("Optimal Value = " + computedValue);
// [END print_solution]
}
static void Main()
{
KnapsackSolver solver = new KnapsackSolver(
KnapsackSolver.KNAPSACK_MULTIDIMENSION_BRANCH_AND_BOUND_SOLVER, "test");
long[] profits = { 360, 83, 59, 130, 431, 67, 230, 52, 93,
125, 670, 892, 600, 38, 48, 147, 78, 256,
63, 17, 120, 164, 432, 35, 92, 110, 22,
42, 50, 323, 514, 28, 87, 73, 78, 15,
26, 78, 210, 36, 85, 189, 274, 43, 33,
10, 19, 389, 276, 312 };
long[,] weights = { { 7, 0, 30, 22, 80, 94, 11, 81, 70,
64, 59, 18, 0, 36, 3, 8, 15, 42,
9, 0, 42, 47, 52, 32, 26, 48, 55,
6, 29, 84, 2, 4, 18, 56, 7, 29,
93, 44, 71, 3, 86, 66, 31, 65, 0,
79, 20, 65, 52, 13 } };
long[] capacities = { 850 };
long optimalProfit = 7534;
Console.WriteLine("Solving knapsack with " + profits.Length +
" items, and " + weights.GetLength(0) + " dimension");
solver.Init(profits, weights, capacities);
long computedProfit = solver.Solve();
Console.WriteLine("Optimal Profit = " + computedProfit + ", expected = " +
optimalProfit);
}
private void DataSet_1_Test(KnapsackSolver solver)
{
var items = new[] {
new Item(value: 175, weight: 65),
new Item(value: 170, weight: 60),
new Item(value: 230, weight: 80),
new Item(value: 260, weight: 90),
new Item(value: 690, weight: 210)
};
var capacity = 760;
var expected = 2420;
var actual = solver.Solve(items, capacity);
Assert.AreEqual(expected, actual);
}
private void DataSet_2_Test(KnapsackSolver solver)
{
var items = new[] {
new Item(value: 25, weight: 20),
new Item(value: 63, weight: 32),
new Item(value: 70, weight: 35),
new Item(value: 61, weight: 50),
new Item(value: 89, weight: 48),
new Item(value: 99, weight: 50),
new Item(value: 103, weight: 51)
};
var capacity = 120;
var expected = 239;
var actual = solver.Solve(items, capacity);
Assert.AreEqual(expected, actual);
}
public void SelectedItemsSolverTest()
{
int[] value = { 10, 50, 70, 100, 20, 30 };
int[] weight = { 10, 20, 30, 35, 40, 50 };
int capacity = 100;
//act
var result = KnapsackSolver.Solve(capacity, weight, value, weight.Length);
var selection = result.selection;
var message = "";
var selectedItems = string.Join(" ", selection);
message += $"SELECTION: {selectedItems}";
Debug.Log($"RESULT {result.maxValue} Selection:\n {message}");
Assert.That(result.maxValue == 230);
Assert.That(result.selection.Count == 4);
Assert.That(result.selection.SequenceEqual(new List <int>()
{
3, 2, 1, 0
}));
}
private KnapsackSolver GetDefaultKnapsackSolver()
{
var knapsack = new KnapsackSolver();
return knapsack;
}
