public static int minimumAbsoluteDifference(List<Integer> arr) {
// Write your code here
Collections.sort(arr);
int minDiff = Integer.MAX_VALUE;
for(int i =1; i < arr.size(); i++){
    Integer temp = Math.abs(arr.get(i) - arr.get(i - 1));
    if(temp < minDiff){
        minDiff = temp;
    }
}
return minDiff;
}