这里主要是对vector容器的一些常见应用的总结。至于vector的构造函数及初始化可以参考，这里不再赘述。元素的遍历
用迭代器访问vector元素
#include <vector>#include <iostream>using namespace std;int main(void){vector<int> v;v.push_back(42);v.push_back(51);v.push_back(69);vector<int>::iterator i,iend;iend=v.end();int j;for(i=v.begin(),j=0; i!=iend; i++,j++)cout<<"v[" << j << "] = " << *i<< endl;return 0;}
元素的插入#include <vector>#include <iostream>using namespace std; int main(void){vector<int> v;v.push_back(6);v.push_back(7);v.push_back(8);v.push_back(10);v.insert(v.begin() + 3, 9); //在元素的前面插入v.insert(v.begin(), 5);//插入为首元素v.insert(v.end(), 11);//插入为末元素for(int i = 0; i < v.size(); i++)cout << "v[" << i << "] = " << v[i] << endl; return 0;}
元素的删除#include <iostream>#include <vector>using namespace std;int main (){vector<int> myvector;for (int i=1; i<=10; i++)myvector.push_back(i);//删除第个元素myvector.erase (myvector.begin()+5);//删除前个元素myvector.erase (myvector.begin(),myvector.begin()+3);cout << "myvector contains:";for (unsigned i=0; i<myvector.size(); ++i)cout << ' ' << myvector[i];cout << '\n';return 0;}
元素的反向遍历#include <vector>#include <iostream>using namespace std; int main(void){vector<int> v;v.push_back(1);v.push_back(3);v.push_back(5);v.push_back(7);v.push_back(9);vector<int>::reverse_iterator ri,riend;riend=v.rend();for(ri=v.rbegin();ri!=riend;ri++)cout << *ri << endl;return 0;}
Vector的交换#include <iostream>#include <vector>using namespace std;int main (){vector<int> v1 (2,10); //10 10vector<int> v2 (3,30); //30 30 30cout << "v1 contains:";for (unsigned i=0; i<v1.size(); i++)cout << ' ' << v1[i];cout << '\n';cout << "v2 contains:";for (unsigned i=0; i<v2.size(); i++)cout << ' ' << v2[i];cout << '\n';v1.swap(v2);//交换cout<<"交换后"<<endl;cout << "v1 contains:";for (unsigned i=0; i<v1.size(); i++)cout << ' ' << v1[i];cout << '\n';cout << "v2 contains:";for (unsigned i=0; i<v2.size(); i++)cout << ' ' << v2[i];cout << '\n';return 0;}其他常用的函数
1)bool empty();
2)size_type size();
3)size_typemax_size();
4)size_typecapacity();
5)reference front()
6)reference back();
7)void pop_back();
//删除末尾的一个容器元素。
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