What is the performance of std::deque in C++11?

Can you explain the performance characteristics of std::deque in C++11?

Sure! std::deque is a double-ended queue that allows fast insertions and deletions at both ends. Its performance is generally O(1) for push and pop operations at both the front and back.

How does std::deque compare to std::vector in terms of performance?

std::vector offers better cache locality and is generally faster for random access, but std::deque is more efficient for frequent insertions and deletions at both ends.

Are there any specific use cases where std::deque is preferred over std::vector?

Yes, std::deque is preferred in scenarios where you need to frequently add or remove elements from both ends, like in a sliding window algorithm.

What are the memory overheads associated with std::deque?

std::deque has a higher memory overhead compared to std::vector due to its segmented storage structure, which can lead to more memory fragmentation.