Dynamically allocated arrays or std::vector

Question

I\'m trying to optimize my C++ code. I\'ve searched the internet on using dynamically allocated C++ arrays vs using std::vector and have generally seen a recommendation in f

Answer 1

One reason you're code might not be performing quite the same is because on your std::vector version, you are incrimenting two values, the integer i and the std::vector::iterator vecIt. To really be equivalent, you could refactor to

start = clock();
for (int i = 0; i < vec.size(); i++) {
  vec[i] = i;
}
end = clock();
cout<<"vector: "<<(double)(end-start)/CLOCKS_PER_SEC<