What are the key data structures in the C++ Standard Library?

What are the key data structures in the C++ Standard Library?

The C++ Standard Library includes several key data structures such as vectors, lists, deques, sets, and maps.

Can you explain the differences between a vector and a list?

Sure! A vector is a dynamic array that allows random access, while a list is a doubly linked list that allows efficient insertions and deletions.

When should I use a set instead of a vector?

Use a set when you need to store unique elements and require fast lookups, as it automatically handles duplicates.

What about maps? How do they differ from sets?

Maps store key-value pairs, allowing you to associate a value with a unique key, while sets only store unique keys without associated values.