What are advanced features of C++ deque?

Can you explain the advanced features of C++ deque?

Sure! C++ deque (double-ended queue) allows insertion and deletion at both ends. It also supports random access.

What are some performance considerations when using deque?

Deques provide amortized constant time complexity for insertions and deletions at both ends, but random access can be slower than vectors.

How does deque compare to vector in terms of memory usage?

Deques may use more memory than vectors due to their non-contiguous storage, which can lead to overhead for managing multiple blocks.

Can you give an example of when to use deque over vector?

Use deque when you need efficient insertions and deletions from both ends, like in a sliding window algorithm.