C++ Vector swap
This function is employed to swap the elements defined in two arrays.
Syntax
Consider two vectors v1 and v2. Syntax would be:
Example
v1.swap(v2);
Parameter
v2: v2 represents a vector that needs to exchange values with another vector.
Return value
It does not return any value.
Example 1
Let's see a simple example.
Example
#include<iostream>
#include<vector>
using namespace std;
int main()
{
vector<int> v1={1,2,3,4,5};
vector<int> v2={6,7,8,9,10};
cout<<"Before swapping,elements of v1 are :";
for (int i=0;i<v1.size();i++)
cout<<v1[i]<<" ";
cout<<'\n';
cout<<"Before swapping,elements of v2 are :";
for(int i=0;i<v2.size();i++)
cout<<v2[i]<<" ";
cout<<'\n';
v1.swap(v2);
cout<<"After swapping,elements of v1 are :";
for(int i=0;i<v1.size();i++)
cout<<v1[i]<<" ";
cout<<'\n';
cout<<"After swapping,elements of v2 are:";
for(int i=0;i<v2.size();i++)
cout<<v2[i]<<" ";
return 0;
}
Output:
Output
Before swapping,elements of v1 are :1 2 3 4 5
Before swapping,elements of v2 are :6 7 8 9 10
After swapping,elements of v1 are :6 7 8 9 10
After swapping,elements of v2 are :1 2 3 4 5
In this instance, the swap function interchanges the elements of vector v1 with vector v2.
