vector<int> parseInts(string str) 
{
    // StringStream to store our string for easy output
    stringstream ss(str);
    // Integer for storing the size of our final number array.
    // We start this at 1, as there is 1 more number than comma.
    int n = 1;
    // Character to provide a buffer, when reading.
    char c;
		
    // First, go through the array, and count the commas.
    // Each comma means another number.
    for(int i = 0; i < str.size(); i++) if(str[i] == ',') n++;
    // Now we know how many numbers there are, 
    // create the number array.
    vector<int> array(n);
    // For each number in the string, pass it into the array, 
    // and than pass the comma into the character buffer.
    for(int j = 0; j < n; j++) ss >> array[j] >> c;
		
    // Return our completed array.
    return array;
}