Add method to access tasks in resource order

src/main/java/jobshop/MainTest.java

@@ -16,12 +16,12 @@ public class MainTest {
             // load the aaa1 instance
             Instance instance = Instance.fromFile(Paths.get("instances/aaa1"));
 
-            // builds a solution in the job-numbers encoding [0 1 1 0 0 1]
+            // builds a solution in the job-numbers encoding [0 0 1 1 0 1]
             JobNumbers enc = new JobNumbers(instance);
             enc.addTask(0);
-            enc.addTask(1);
-            enc.addTask(1);
             enc.addTask(0);
+            enc.addTask(1);
+            enc.addTask(1);
             enc.addTask(0);
             enc.addTask(1);
 

src/main/java/jobshop/encodings/ResourceOrder.java

@@ -62,6 +62,16 @@ public class ResourceOrder extends Encoding {
         nextFreeSlot[machine] += 1;
     }
 
+    /** Returns the i-th task scheduled on a particular machine.
+     *
+     * @param machine Machine on which the task to retrieve is scheduled.
+     * @param taskIndex Index of the task in the queue for this machine.
+     * @return The i-th task scheduled on a machine.
+     */
+    public Task getTaskOfMachine(int machine, int taskIndex) {
+        return tasksByMachine[machine][taskIndex];
+    }
+
     /** Exchange the order of two tasks that are scheduled on a given machine.
      *
      * @param machine Machine on which the two tasks appear (line on which to perform the exchange)