How can I optimize the performance of std::vector in C++?

How can I optimize the performance of std::vector in C++?

To optimize std::vector performance, consider reserving space with reserve() to avoid reallocations.

What about using std::deque instead of std::vector?

std::deque can be more efficient for frequent insertions and deletions at both ends, but std::vector is generally faster for random access.

Are there specific scenarios where std::vector is significantly better?

Yes, std::vector is better for scenarios with frequent random access and when the size is known in advance.

How does memory allocation affect performance?

Frequent reallocations can slow down performance. Using reserve() helps mitigate this by allocating memory upfront.