plese anyone guide me in this code where i am doing mistke public static List countingSort(List arr) { // Write your code here //find the max and min in the given list if(arr==null || arr.isEmpty()){ return new ArrayList<>(); }

 int max = arr.get(0);
    int min = arr.get(0);
    for (int num : arr) {
        if (num > max) {
            max = num;
        }
        if (num < min) {
            min = num;
        }
    }
 int range = max-min + 1;
     List<Integer>list= new ArrayList<>();

     for (int i = 0; i < range; i++) {
        list.add(0);
    }         // store the count of the element
     for (int num : arr) {
        list.set(num - min, list.get(num - min) + 1);
    }
     return list;