What is the performance of STL deque in C++?

What is the performance of STL deque in C++?

The STL deque in C++ offers average constant time complexity for insertions and deletions at both ends, but random access is slower than a vector.

How does it compare to std::vector?

While std::vector provides faster random access, std::deque is more efficient for operations at both ends due to its double-ended nature.

Are there any specific use cases where deque is preferred?

Yes, deques are preferred in scenarios where you need frequent insertions and deletions at both ends, like in queue implementations.

What are the memory overheads associated with using deque?

Deques may have higher memory overhead due to their internal structure, which consists of multiple chunks of memory, unlike vectors that use a single contiguous block.