What are the different types of containers in C++?

What are the different types of containers in C++?

C++ offers several container types, including vectors, lists, deques, sets, maps, and arrays. Each serves different purposes.

Can you explain the differences between vectors and lists?

Sure! Vectors are dynamic arrays that allow random access and are efficient for adding/removing elements at the end. Lists are doubly linked lists, which allow efficient insertions and deletions from anywhere but don't support random access.

When should I use a map instead of a vector?

Use a map when you need to associate keys with values and require fast lookups. Vectors are better for ordered collections without key-value pairs.

What about sets? How do they differ from maps?

Sets store unique elements and do not allow duplicates, while maps store key-value pairs. Both are implemented as balanced trees.

Can you give me an example of when to use a deque?

Deques are useful when you need fast insertions and deletions at both ends of the container, like in a queue or stack implementation.