Restaurant, Menu, Order classes in LLD - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define the Restaurant class with a name attribute.

LLD

class Restaurant:
    def __init__(self, [1]):
        self.name = name

Drag options to blanks, or click blank then click option'

Aname

Blocation

Corder

Dmenu

Attempts:

3 left

💡 Hint

Common Mistakes

Using unrelated parameter names like menu or order.

The constructor needs a parameter name to set the restaurant's name.

2fill in blank

medium

Complete the code to add a method that adds a Menu item to the Restaurant.

LLD

class Restaurant:
    def __init__(self, name):
        self.name = name
        self.menu_items = []

    def [1](self, item):
        self.menu_items.append(item)

Drag options to blanks, or click blank then click option'

Aadd_menu_item

Bremove_menu_item

Cget_menu

Dupdate_menu

Attempts:

3 left

💡 Hint

Common Mistakes

Using method names that do not add items like remove or get.

The method to add a menu item should be named add_menu_item to clearly describe its purpose.

3fill in blank

hard

Fix the error in the Order class constructor to correctly initialize the order_id attribute.

LLD

class Order:
    def __init__(self, [1]):
        self.order_id = order_id
        self.items = []

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Aitems

Border_id

Cid

Dorder

Attempts:

3 left

💡 Hint

Common Mistakes

Using a parameter name different from the attribute name causing errors.

The constructor must accept order_id as a parameter to initialize the attribute.

4fill in blank

hard

Fill both blanks to create a method in Order that adds a Menu item to the items list.

LLD

class Order:
    def __init__(self, order_id):
        self.order_id = order_id
        self.items = []

    def [1](self, [2]):
        self.items.append(item)

Drag options to blanks, or click blank then click option'

Aadd_item

Bitem

Cremove_item

Dorder

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong method names or parameter names that don't match the code.

The method should be named add_item and take a parameter item to add to the order.

5fill in blank

hard

Fill all three blanks to create a method in Menu that returns a dictionary of item names and prices for items priced above a threshold.

LLD

class Menu:
    def __init__(self):
        self.items = {}

    def get_expensive_items(self, price_threshold):
        return {name: [1] for name, [2] in self.items.items() if [3] > price_threshold}

Drag options to blanks, or click blank then click option'

Aprice

Ditem

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong variable names or mixing keys and values.

The dictionary comprehension uses price as the value, iterates over price pairs, and compares price to the threshold.