private static Integer[] bubble(Integer[] integers) {
		for (int curr = 0; curr < integers.length; ++curr) {
			for (int other = curr + 1; other < integers.length; ++other) {
				if (integers[curr] > integers[other]) {
					int tmp = integers[curr];
					integers[curr] = integers[other];
					integers[other] = tmp;
				}
			}
		}
		return integers;
	}