Move java examples

2018-07-06 21:03:33 +02:00
parent 6485017458
commit 13a566bed4
58 changed files with 340 additions and 693 deletions
--- a/examples/java/Knapsack.java
+++ b/examples/java/Knapsack.java
@@ -0,0 +1,57 @@
+// Copyright 2010-2017 Google
+// 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.algorithms.KnapsackSolver;
+
+/**
+ * Sample showing how to model using the knapsack solver.
+ *
+ */
+
+public class Knapsack {
+  static { System.loadLibrary("jniortools"); }
+
+  private static void solve() {
+    KnapsackSolver solver = new KnapsackSolver(
+        KnapsackSolver.SolverType.KNAPSACK_MULTIDIMENSION_BRANCH_AND_BOUND_SOLVER, "test");
+    final 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};
+
+    final 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}};
+
+    final long[] capacities = {850};
+
+    final long optimalProfit = 7534;
+    System.out.println("Solving knapsack with " + profits.length + " items");
+
+    solver.init(profits, weights, capacities);
+
+    final long computedProfit = solver.solve();
+
+    System.out.println("Optimal_Profit = " + computedProfit + "/" +
+                       optimalProfit);
+  }
+
+  public static void main(String[] args) throws Exception {
+    Knapsack.solve();
+  }
+}