稳定的桶排序Java

不能排对象

public static int[] sort(int[] arr){
        int[] result = new int[arr.length];
        int[] count = new int[10];
        
        for (int i = 0; i < arr.length; i++){   //此处可用增强for
            count[arr[i]]++;
        }
        
//        for (int i = 0, j = 0; i < count.length; i++ ){
//            while(count[arr[i]]-- > 0) result[j++] = i;
//        }
        for (int i = 1; i < count.length; i++){
            count[i] = count[i] + count[i-1];
        }
        
        for (int i = arr.length - 1; i >= 0; i--){
            result[--count[arr[i]]] = arr[i];
        }
        return result;
    }