The _____ Pattern is a design pattern that provides a way to access elements of a collection sequentially without exposing the collection's internal structure.
It defines common interfaces for iterating over various types of collections.
* Iterator
* Interpreter
* Mediator
* Template
#design #pattern #quiz #iterator #programming
Answer: iterator
The Iterator Pattern is a behavioral design pattern in software development that provides a way to access elements of a collection sequentially without exposing its underlying structure. It defines a common interface for iterating over different types of collections, making it easier to traverse and work with data.
Iterator: The Iterator is an interface that defines methods for traversing a collection, such as next(), hasNext(), and current(). It ensures a common way to access elements in various collections.
Concrete Iterator: Concrete Iterator classes implement the Iterator interface for specific types of collections. They maintain a reference to the collection and keep track of the current position during iteration.
Aggregate: The Aggregate is an interface or abstract class that defines the structure of the collection. It includes a method for creating an iterator that can traverse the collection.
Concrete Aggregate: Concrete Aggregate classes implement the Aggregate interface and provide a specific implementation of a collection, such as an array, list, or custom data structure. They create and return Concrete Iterators for their collections.
The Iterator Pattern allows you to separate the logic for traversing a collection from the collection itself, making the code more flexible and reusable. It's commonly used in various programming languages to work with collections, such as arrays, lists, or databases, in a consistent and convenient way.