How does the performance of std::vector compare to other containers in C++?

How does the performance of std::vector compare to other containers in C++?

std::vector is generally faster than other containers like std::list or std::deque for random access and iteration due to its contiguous memory allocation.

What about insertion and deletion performance?

Insertion and deletion at the end of a std::vector is efficient (O(1) on average), but inserting or deleting in the middle can be costly (O(n)).

Are there any scenarios where I should avoid using std::vector?

Yes, if you need frequent insertions and deletions from the middle of the container, consider using std::list or std::deque instead.

How does std::vector handle memory allocation?

std::vector manages its own memory and can resize automatically, but it may involve reallocations which can be expensive.