Generate populations correctly

src/main/java/InteractiveInterface.java

@@ -175,10 +175,10 @@ public class InteractiveInterface {
                     throw new InputMismatchException("Max well population must be greater than min well population");
                 }
                 //maximum should be inclusive, so need to add one to max of randomly generated values
-                populations = (Integer[]) rand.ints(minPop, maxPop + 1)
+                populations = rand.ints(minPop, maxPop + 1)
                         .limit(numSections)
                         .boxed()
-                        .toArray();
+                        .toArray(Integer[]::new);
                 System.out.print("Populations: ");
                 System.out.println(Arrays.toString(populations));
             }