Method costDiag

src/test/java/com/aparapi/codegen/Diff.java:69–79

(List<Point>[][] flags, int x, int y)

   }

   static void costDiag(List<Point>[][] flags, int x, int y) {
      if (x == 0 || y == 0 || flags[x - 1][y - 1] == null) {
         if (x < (flags.length - 2) && y < (flags[0].length - 2)) {
            flags[x][y] = new ArrayList<Point>();
            flags[x][y].add(new Point(x, y));
         }
      } else {
         flags[x - 1][y - 1].add(new Point(x, y));
         flags[x][y] = flags[x - 1][y - 1];
      }
   }

   static void cleanIslands(List<Point>[][] flags, int x, int y) {
      flags[x][y] = null;