What kind of operators are mostly implemented in the State machine?

Use this pattern when you have a class polluted with massive conditionals that alter how the class behaves according to the current values of the class’s fields. What pattern?

What pattern you can use when having a lot of duplicate code across similar states and transitions of a condition-based state machine.

Implementation of State Pattern organizes the code related to particular states into separate classes and introduces new states without changing existing state classes or the context. Which of SOLID principles would follow you?

__________ is a behavioral design pattern that lets you define a family of algorithms and put each of them into a separate class, and make their objects interchangeable.

Use the ______________ pattern when you want to use different variants of an algorithm within an object and be able to switch from one algorithm to another during runtime.

Notice up prostitutes of Strategy Pattern

_______________ is a behavioral design pattern that defines the skeleton of an algorithm in the superclass but lets subclasses override specific steps of the algorithm without changing its structure.

The ____________ lets you turn a monolithic algorithm into a series of individual steps which can be easily extended by subclasses while keeping intact the structure defined in a superclass.

______________ is a behavioral design pattern that lets you traverse elements of a collection without exposing its underlying representation (list, stack, tree, etc.).

Use the Iterator pattern when your collection has a complex data structure under the hood, but you want to hide its complexity from clients (either for convenience or security reasons).

Using an iterator may be more efficient than going through elements of some specialized collections directly.

_____________ is a behavioral design pattern that lets you reduce chaotic dependencies between objects. The pattern restricts direct communications between the objects and forces them to collaborate only via a mediator object.

Use the Mediator pattern when you can’t reuse a component in a different program because it’s too dependent on other components.

_____________ is a behavioral design pattern that lets you save and restore the previous state of an object without revealing the details of its implementation.

In which pattern you can produce snapshots of the object’s state without violating its encapsulation?