This code can only sort strings of a set length. how can it be modified so that you can pass in string of different lengths and it will work properly. without using any addition data stuctures to store data.

public static void radixSortstringSameLength(String[] arr, int len) //System.out.println(Initial:"+Arrays.toString(arr)); /umber of buckets (256 in character set) int maxBuckets256; //buckets need to be lists instead of counters ArrayList[] buckets = new ArrayList[maxBuckets]; //loop from end to beginning of strings sort by last character first) for(int i -len-1; i >- 0; i-) //loop through each string for(int j = 0; J [] buckets = new ArrayList[maxBuckets]; //loop from end to beginning of strings sort by last character first) for(int i -len-1; i >- 0; i-) //loop through each string for(int j = 0; J