Answer
See the explanation
Work Step by Step
An abstract data type (ADT) representing an address book might include data structures such as:
1. **Array**: For storing a list of contacts.
2. **Linked List**: To efficiently add, remove, and search for contacts.
3. **Hash Table**: For fast lookups based on keys like names or phone numbers.
4. **Tree**: Particularly a binary search tree for efficient searching and sorting of contacts based on certain criteria.
5. **Map or Dictionary**: To map keys (e.g., names) to values (e.g., contact details).
6. **Queue or Stack**: For managing operations such as adding, removing, or updating contacts in a structured manner.
Procedures or operations that might be included in the ADT for an address book could be:
1. **AddContact**: Adds a new contact to the address book.
2. **RemoveContact**: Deletes a contact from the address book.
3. **SearchContact**: Searches for a contact based on specified criteria (e.g., name, phone number).
4. **UpdateContact**: Modifies the details of an existing contact.
5. **SortContacts**: Arranges the contacts in a specific order (e.g., alphabetical by name, by date added).
6. **GetContactDetails**: Retrieves the details of a specific contact.
7. **CountContacts**: Returns the total number of contacts in the address book.
8. **ClearAddressBook**: Removes all contacts from the address book.
These data structures and procedures provide a framework for organizing and managing the data within an address book ADT.
