void () { int[][] change = buildChange(new int[]{2, 4, 6, 1, 8, 3, 8, 2, 6, 5, 2, 4, 7, 11, 13}, new int[]{1, 10, 2, 3, 5, 7, 11, 13, 12}); checkChange(change, new int[]{3, 5, 9, 12, 13, 14}, new int[]{0, 3, 4, 5, 6, 7}); }