void () { BitSet[] change1 = buildChange(new int[]{1, 2}, new int[]{3, 4}); checkChange(change1, new int[]{1, 1}, new int[]{1, 1}); BitSet[] change2 = buildChange(new int[]{1, 2, 3}, new int[]{4, 5, 6}); checkChange(change2, new int[]{1, 1, 1}, new int[]{1, 1, 1}); }