Gather data

src/test/java/puzzle/SwedishGeneratorTest.java

@@ -159,13 +159,15 @@ public class SwedishGeneratorTest {
       var a    = new int[]{ 1, 3, 5, 7, 9 };
       var b    = new int[]{ 2, 3, 6, 7, 10 };
       
-      var res = SwedishGenerator.intersectSorted(buff, a, a.length, b, b.length);
-      assertArrayEquals(new int[]{ 3, 7 }, res);
+      var count = SwedishGenerator.intersectSorted(a, a.length, b, b.length, buff);
+      assertEquals(2, count);
+      assertEquals(3, buff[0]);
+      assertEquals(7, buff[1]);
       
       var c = new int[]{ 1, 2, 3 };
       var d = new int[]{ 4, 5, 6 };
-      res = SwedishGenerator.intersectSorted(buff, c, c.length, d, d.length);
-      assertEquals(0, res.length);
+      count = SwedishGenerator.intersectSorted(c, c.length, d, d.length, buff);
+      assertEquals(0, count);
    }
    
    @Test