Pushing an array into a vector

Question

I\'ve a 2d array, say A[2][3]={{1,2,3},{4,5,6}}; and I want to push it into a 2D vector(vector of vectors). I know you can use two for loops to pus

Answer 1

If you want to push the data into vector of vectors, you have to write something like this:

vector inner;
vector< vector >outer;

...
outer.pushback(inner);

I think there is no way to do it in a single loop.

If you want to use just one vector (something similar like you written), then you can do it in a single loop:

int A[2][3]={{1,2,3},{4,5,6}};
int* p = A[0];
std::vector inner;
std::vector< std::vector >outer;

for(int i = 0; i < 6; ++i)
{
    inner.push_back(*p++);
}