int minimumAbsoluteDifference(int n, vector <int> arr) {
    sort(arr.begin(), arr.end());
    int min = abs(arr[1]-arr[0]);
    for (int i = 1; i < arr.size() - 1; i++) {
        if (abs(arr[i+1] - arr[i]) < min)
            min = abs(arr[i+1] - arr[i]);
    }
    return min;
}