vector::swap
交換兩個向量的項目。
void swap( vector<Type, Allocator>& _Right ); friend void swap( vector<Type, Allocator >& _Left, vector<Type, Allocator >& _Right );
參數
_Right
提供待交換項目的向量,或其項目要與向量 _Left 交換的向量。_Left
其項目要與向量 _Right 交換的向量。
範例
// vector_swap.cpp
// compile with: /EHsc
#include <vector>
#include <iostream>
int main( )
{
using namespace std;
vector <int> v1, v2;
v1.push_back(1);
v1.push_back(2);
v1.push_back(3);
v2.push_back(10);
v2.push_back(20);
cout << "The number of elements in v1 = " << v1.size( ) << endl;
cout << "The number of elements in v2 = " << v2.size( ) << endl;
cout << endl;
v1.swap(v2);
cout << "The number of elements in v1 = " << v1.size( ) << endl;
cout << "The number of elements in v2 = " << v2.size( ) << endl;
}
需求
標頭:<vector>
命名空間: std