public class BubbleSortDemon {

    public static void sort(List<Integer> numbers){
        for (int i = 0; i < numbers.size(); i++) {
            for (int j = 0; j < numbers.size() - i-1; j++) {
                if(numbers.get(j)> numbers.get(j+1)){
                    int tmp = numbers.get(j);
                    numbers.set(j,numbers.get(j+1));
                    numbers.set(j+1,tmp);
                }
            }
        }
    }

    public static void main(String[] args) {
        List<Integer> nums = Lists.newArrayList(1,2,4,6,8,3,5,9,7);
        BubbleSortDemon.sort(nums);
        System.out.println(nums);
    }
}