public static void main(String[] args) {
        int[] numbers = new int[]{32,1,321};
        String[] nums = new String[3];
        for(int i =0; i< numbers.length; i++){
            nums[i] = numbers[i] + "";
        }
        Arrays.sort(nums,(s1,s2)->(s1+s2).compareTo(s2+s1));

        System.out.println(nums);
    }