int* rotateLeft(int d, int arr_count, int* arr, int* result_count) {
    int* res_arr = (int* )malloc(arr_count*sizeof(int));
    *result_count = 0;
    for (int i = 0; i<arr_count; i++){
        res_arr[i] = arr[(i+d)%arr_count];
        (*result_count) ++;
    }
    return res_arr;
}