C++ Vector insert
It is employed to add a new element at a specific position.
Syntax
Consider a vector v. Syntax would be:
Example
insert(iterator,val);
insert(iterator,n,val);
insert(iterator,InputIterator first,InputIterator last);
Parameter
- iterator :An iterator defines the position, where the new elements are to be inserted.
- val : The valspecifies the value which is to be inserted.
- n : Number of times the value is to be occurred.
- (first,last) : It defines the range of elements which is to be inserted.
Return value
It yields an iterator referencing the recently added element.
Example 1
Let's see a simple example.
Example
#include<iostream>
#include<vector>
using namespace std;
int main()
{
vector<string> v{"java"};
stringstr="programs";
v.insert(v.begin()+1,str);
for(int i=0;i<v.size();i++)
cout<<v[i]<<" ";
return 0;
}
Output:
Output
java programs
In this instance, the term "programs" is added to the vector 'v' using the insert method.
Example 2
Let's see a simple example.
Example
#include<iostream>
#include<vector>
using namespace std;
int main()
{
vector<string> v{"C" ,"Tutorials"};
v.insert(v.begin()+1,2,"C");
for(int i=0;i<v.size();i++)
cout<<v[i]<<" ";
return 0;
}
Output:
Output
C CC Tutorials
Example 3
Let's see a simple example.
Example
#include<iostream>
#include<vector>
using namespace std;
int main()
{
vector<int> v{1,2,3,4,5};
vector<int> v1{6,7,8,9,10};
v.insert(v.end(),v1.begin(),v1.begin()+5);
for(int i=0;i<v.size();i++)
cout<<v[i]<<" ";
return 0;
}
Output:
Output
1 2 3 4 5 6 7 8 9 10
