如何插入載體vpii <矢量<對<int,int>>>

Question

如何插入vector< vector < pair < int,int > > >

矢量對我是STL的初學者，請幫我

Answer 1

這是如何插入vpii在vector<vector<pair<int,int> > >：

vector<vector<pair< int,int> > > vvpii; 
pair<int, int> pii(1, 2); 
vector<pair<int, int> > vpii; 
vpii.push_back(pii); 
vvpii.push_back(vpii); 

// or if your compiler supports c++11, 
// you can use Brace-enclosed initializer lists 
vvpii.push_back({ // vector initializer 
    {1, 2}, // pair initializer 
    {2, 3}, // another pair 
});