public static int minimumAbsoluteDifference(List<Integer> arr) {
        // Sort the array
        Collections.sort(arr); 
        
        int absMin = Integer.MAX_VALUE;
        for (int i = 1; i < arr.size(); i++) {
            int absDiff = Math.abs(arr.get(i) - arr.get(i - 1));
            absMin = Math.min(absMin, absDiff);
        }
        
        return absMin;
    }