Can you name the main types of data structures?

Main types of data structures:

• Arrays — an ordered set of elements of the same type, accessed by index.
• Lists — dynamic collections, such as linked lists, allowing easy addition and removal of elements.
• Stacks — a structure with access based on the LIFO (last in, first out) principle.
• Queues — a structure with access based on the FIFO (first in, first out) principle.
• Hash Tables — storage of key-value pairs with quick access by key.
• Trees — hierarchical structures, such as binary search trees.
• Graphs — a set of nodes and edges, used for network modeling.

In C#, these structures are represented in the standard library, for example, List<T>, Stack<T>, Queue<T>, Dictionary<TKey, TValue>. Trees can be implemented independently or using third-party libraries.