Best way to split a vector into two smaller arrays?

Question

What I\'m trying to do:

I am trying to split a vector into two separate arrays. The current int vector contains an element per line in a text file. Th

Answer 1

If you only need a reference to the numbers without manipulating them, then you can do:

int *array_1 = &lines[0];
int *array_2 = &lines[lines.size() / 2];

array_1 and array_2 are, actually, pointers to the start and middle of the vector. This works since STL guarantees that vectors store their elements within a continuous memory. Note that referring to lines.begin() can't be used for this.