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

The reason that your array iterating is faster is that the the number of iteration is constant, and compiler is able to unroll the loop. Try to use rand to generate a number, and multiple it to be a big number you wanted so that compiler wont be able to figure it out at compile time. Then try it again, you will see similar runtime results.