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

You can resize vectors and then use copy.

int A[2][3]={{1,2,3},{4,5,6}};
std::vector< std::vector > vec;

vec.resize(2);
for (int i=0; i<2; i++)
{
    vec[i].resize(3);
    std::copy(A[i], A[i]+3, vec[i].begin());
}

Is it practical? Definetly not.