def rotateLeft(d, arr):
    for i in range(d):
        arr.append(arr.pop(0))
    return arr

vector<int> rotateLeft(int d, vector<int> arr) {
    vector<int> tmp;

// Copy elements from position d to the end of the array
    for (int i = d; i < arr.size(); i++) {
        tmp.push_back(arr[i]);
    }

// Copy elements from the beginning to position d-1
    for (int i = 0; i < d; i++) {
        tmp.push_back(arr[i]);
    }
    return tmp;
}

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

public static List<int> rotateLeft(int d, List<int> arr)
    {
        /// 1 2 3 4 5 6 7 8 9 10
        /// 3 4 5 6 7 8 9 10 1 2
        var holding = new int[d];
        arr.CopyTo(0, holding, 0, d);
         arr.RemoveRange(0,d);
        arr.AddRange(holding);        
        return arr;
    }