copy elements in vector (c++)

Question

vector< int > a {1 , 2, 3};
Vector< int > b {4, 5, 6};
copy( a.begin() + 1, a.begin()+ 3, b.begin());
.
This is giving the output => 2 3 6
But i want the out put = > 2 3 4 5 6
.
How can i do this ???
Advance thanks ....

Answer 1

Any solution code ?

Answer 2

Can you specify the name of the algorithm ???