vector<vector<int> >& test::rotateGrid(vector< vector<int> >& inGrid) {
    vector<vector<int> > outGrid;
    for (int i = 0; i < inGrid[0].size(); i++) {
        vector<int> vec;
        for (int j = 0; j < inGrid.size(); j++) {
            vec.push_back(inGrid[j][inGrid[0].size() - i - 1]);
        }
        outGrid.push_back(vec);
    }
    return outGrid;
}