public int find(ArrayList<Integer> list, int n) {
		boolean found = false;
		int i = 0;

		while(!found && i < list.size()) {
			if(list.get(i) == n) {
				found = true;

			} else {
				i++;
			}
		}

		if(found) {
			if(i > 0) {
				int temp = list.get(i);
				list.set(i, list.get(i-1));
				list.set(i-1, temp);
			}
			return i-1;
		} else {
			return -1;
		}
	}