#include<iostream>
using namespace std;
#include<vector>
#include<algorithm>
void test01()
{
vector<vector<int>> v;
vector<int> v1;
vector<int> v2;
vector<int> v3;
vector<int> v4;
for (int i = 0; i < 4; i++)
{
v1.push_back(i + 1);
v2.push_back(i + 2);
v3.push_back(i + 3);
v4.push_back(i + 4);
}
v.push_back(v1);
v.push_back(v2);
v.push_back(v3);
v.push_back(v4);
//常规方法
/*for (vector<vector<int>>::iterator it = v.begin(); it != v.end(); it++)
{
for (vector<int>::iterator vit = (*it).begin(); vit != (*it).end(); vit++)
{
cout<<*vit<<" ";
}
cout<<endl;
}*/
}
int main()
{
test01();
}