How do C++ containers compare in terms of performance?

How do C++ containers compare in terms of performance?

C++ offers several containers like vector, list, and map. Each has different performance characteristics depending on usage.

Can you explain the performance differences between std::vector and std::list?

Sure! std::vector provides fast random access and is cache-friendly, while std::list allows for efficient insertions and deletions.

When should I use std::deque instead of std::vector?

Use std::deque when you need efficient insertions and deletions at both ends, as std::vector is slower for these operations.

What about std::map and std::unordered_map?

std::map is ordered and uses a tree structure, while std::unordered_map is faster for lookups due to its hash table implementation.