Adapter pattern in LLD - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare the Adapter class implementing the Target interface.

LLD

class Adapter([1]):
    def __init__(self, adaptee):
        self.adaptee = adaptee

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AAdaptee

BClient

CTarget

DAdapter

Attempts:

3 left

💡 Hint

Common Mistakes

Using Adaptee as the base class instead of Target.

Not implementing any interface.

Confusing Adapter with Client.

The Adapter class must implement the Target interface to be used by the client.

2fill in blank

medium

Complete the Adapter method to call the adaptee's specific request.

LLD

    def request(self):
        return self.adaptee.[1]()

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Aspecific_request

Badapter_request

Ctarget_request

Drequest

Attempts:

3 left

💡 Hint

Common Mistakes

Calling request() on adaptee which does not exist.

Using target_request() which is not defined.

Using adapter_request() which is not a method.

The Adapter translates the Target's request() to the Adaptee's specific_request() method.

3fill in blank

hard

Fix the error in the client code to use the Adapter correctly.

LLD

adaptee = Adaptee()
adapter = [1](adaptee)
result = adapter.request()

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AAdaptee

BAdapter

CTarget

DClient

Attempts:

3 left

💡 Hint

Common Mistakes

Instantiating Adaptee instead of Adapter for the adapter variable.

Using Target which is an interface, not a class.

Using Client as a class which is not defined.

The client must create an Adapter instance passing the Adaptee to use the adapted interface.

4fill in blank

hard

Fill both blanks to complete the Adapter pattern class definitions.

LLD

class [1]:
    def specific_request(self):
        return "Adaptee behavior"

class [2]:
    def request(self):
        pass

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AAdaptee

BAdapter

CTarget

DClient

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up Adaptee and Target class names.

Using Adapter as the base interface.

Confusing Client with interface classes.

The Adaptee class has the specific_request method, and Target is the interface with request method.

5fill in blank

hard

Fill all three blanks to complete the Adapter's request method implementation.

LLD

class Adapter(Target):
    def __init__(self, adaptee):
        self.adaptee = adaptee

    def request(self):
        return self.adaptee.[1]() + ' adapted by ' + [2].[3]

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Aspecific_request

Bself

C__class__.__name__

Drequest

Attempts:

3 left

💡 Hint

Common Mistakes

Calling wrong method on adaptee.

Using class name directly instead of self.__class__.__name__.

Using request instead of specific_request.

The Adapter calls adaptee.specific_request() and appends the Adapter class name using self.__class__.__name__.