Differnce between the smallest and largest element in the array

code.java

int maxDiff(int arr[]) 
  
    {
        int arr_size = arr.length;
        int max_diff = arr[1] - arr[0];
        int i, j;
        for (i = 0; i < arr_size; i++) 
        {
            for (j = i + 1; j < arr_size; j++) 
            {
                if (arr[j] - arr[i] > max_diff)
                    max_diff = arr[j] - arr[i];
            }
        }
        return max_diff;
}