如何在容器(vector> 中指定的位置插入一个数据？

[ra3]

如：
vector<int> v;

for (int i = 0; i < 10; i++)
{
v.push_back(i);
}

如何在 0 的后面插入一个数？

[peterpan]

用insert
int main( )
{
using namespace std;
vector <int> v1;
vector <int>::iterator Iter;

v1.push_back( 10 );
v1.push_back( 20 );
v1.push_back( 30 );

cout << "v1 =" ;
for ( Iter = v1.begin( ) ; Iter != v1.end( ) ; Iter++ )
cout << " " << *Iter;
cout << endl;

v1.insert( v1.begin( ) + 1, 40 );
cout << "v1 =";
for ( Iter = v1.begin( ) ; Iter != v1.end( ) ; Iter++ )
cout << " " << *Iter;
cout << endl;
v1.insert( v1.begin( ) + 2, 4, 50 );

cout << "v1 =";
for ( Iter = v1.begin( ) ; Iter != v1.end( ) ; Iter++ )
cout << " " << *Iter;
cout << endl;

v1.insert( v1.begin( )+1, v1.begin( )+2, v1.begin( )+4 );
cout << "v1 =";
for (Iter = v1.begin( ); Iter != v1.end( ); Iter++ )
cout << " " << *Iter;
cout << endl;
}

Output
v1 = 10 20 30
v1 = 10 40 20 30
v1 = 10 40 50 50 50 50 20 30
v1 = 10 50 50 40 50 50 50 50 20 30

[hcj2002]

vector::insert
iterator insert(iterator it, const T& x = T());
void insert(iterator it, size_type n, const T& x);
void insert(iterator it,
const_iterator first, const_iterator last);

[Willin]

insert(iterator it,const T& x)

[xu123]

学习...

[qhgary]

首先找到要插入的iterator，然后通过insert插入进去