Order processing pipeline in HLD - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to identify the first step in the order processing pipeline.

HLD

order_pipeline = ["[1]", "Payment", "Packaging", "Shipping"]

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

A"Order Received"

B"Packaging"

C"Shipping"

D"Payment"

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 'Payment' as the first step instead of 'Order Received'.

Confusing 'Packaging' or 'Shipping' as the initial step.

The first step in the order processing pipeline is Order Received, where the system acknowledges the new order.

2fill in blank

medium

Complete the code to add a step that verifies payment before packaging.

HLD

order_pipeline = ["Order Received", "[1]", "Packaging", "Shipping"]

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

A"Order Confirmation"

B"Shipping"

C"Payment"

D"Inventory Check"

Attempts:

3 left

💡 Hint

Common Mistakes

Placing 'Shipping' before 'Payment'.

Confusing 'Inventory Check' as the payment step.

Payment verification must happen after receiving the order and before packaging to ensure the order is valid.

3fill in blank

hard

Fix the error in the step that should handle packaging in the pipeline.

HLD

order_pipeline = ["Order Received", "Payment", "[1]", "Shipping"]

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

A"Order Confirmation"

B"Packaging"

C"Payment"

D"Shipping"

Attempts:

3 left

💡 Hint

Common Mistakes

Repeating 'Payment' instead of 'Packaging'.

Skipping the packaging step entirely.

The packaging step must be correctly placed after payment and before shipping to prepare the order for delivery.

4fill in blank

hard

Fill both blanks to create a dictionary mapping each step to its responsible team.

HLD

responsible_teams = {"Order Received": "[1]", "Payment": "[2]"}

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

A"Customer Service"

B"Finance"

C"Logistics"

D"Warehouse"

Attempts:

3 left

💡 Hint

Common Mistakes

Assigning 'Logistics' to 'Order Received'.

Assigning 'Warehouse' to 'Payment'.

Customer Service handles order reception, and Finance handles payment processing.

5fill in blank

hard

Fill all three blanks to complete the request flow trace for an order.

HLD

request_flow = ["[1]", "[2]", "[3]", "Shipping"]

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

AOrder Received

BPayment Verified

COrder Packaged

DOrder Cancelled

Attempts:

3 left

💡 Hint

Common Mistakes

Including 'Order Cancelled' in the normal flow.

Mixing up the order of steps.

The order flow starts with receiving the order, then verifying payment, followed by packaging before shipping.