C++：vector容器

二维向量的遍历方法

//二维向量的遍历，迭代器遍历
vector<vector<int> > array = {{1,2,8,9},{2,4,9,12},{4,7,10,13},{6,8,11,15}};  
vector<vector<int >>::iterator iter;
for (iter = array.begin(); iter != array.end() ; ++iter) {
    for (int i = 0; i < (*iter).size(); ++i) {
        cout << (*iter)[i] << " " ;
    }
    cout << endl;
}

//二维向量的遍历，数组下表
vector<vector<int> > array = {{1,2,8,9},{2,4,9,12},{4,7,10,13},{6,8,11,15}};  

for (int i = 0; i < array.size(); i++)
{
    for(int j = 0; j < array[i].size(); j++)
        cout << V[i][j] << " ";
    cout << endl;
}