<String> 179

class Solution {
    public String largestNumber(int[] nums) {
        for(int i = 0; i < nums.length; i++){
            for(int j = 0; j < nums.length - i - 1; j++){
                String s1 = nums[j] + "" + nums[j + 1];
                String s2 = nums[j + 1] + "" + nums[j];
                if(s1.compareTo(s2) < 0){
                    int temp = nums[j];
                    nums[j] = nums[j + 1];
                    nums[j + 1] = temp;
                }
            }
        }
        String res = "";
        for(int i = 0; i < nums.length; i++){
            res += nums[i];
        }
        if(res.charAt(0) == ‘0‘){
            return "0";
        }
        return res;
    }
}