public static String arrange(String sentence){
        String[] arr = sentence.substring(0,sentence.length()-1).split(" ");
        Arrays.sort(arr, Comparator.comparingInt(String::length));
        String res = new String("");
        for(String s : arr){
            res += s;
            res += " ";
        }
        res = res.substring(0,1).toUpperCase() + res.substring(1,res.length()-1).toLowerCase() + ".";
        return res;
    }