Build DoorDash Checkout UI | Dataford Interview Questions

Build a functional checkout page for DoorDash using SwiftUI or UIKit (for iOS) or Jetpack Compose or XML (for Android) that includes an item list, pricing breakdown, payment method selector, and a confirmation button.

For grading, model the checkout behavior with a pure function. Each item contains a name, unit price in cents, and quantity. Return the subtotal, fees, total, selected payment method, and whether confirmation is allowed.

Function: checkout_page(items, delivery_fee_cents, service_fee_cents, payment_methods, selected_payment_method, confirm_pressed)

Output: Return a dictionary with subtotal_cents, total_cents, selected_payment_method, and can_confirm. Confirmation is allowed only when the cart is non-empty, the selected method is available, and the button was pressed.

Constraints

0 <= items.length <= 1000
Each item contains a non-empty name, a non-negative integer price_cents, and a positive integer quantity
0 <= delivery_fee_cents, service_fee_cents <= 100000
payment_methods contains strings
selected_payment_method is a string or null
All monetary values fit within standard integer range

Function Signature

def checkout_page(items, delivery_fee_cents, service_fee_cents, payment_methods, selected_payment_method, confirm_pressed):

Your question is Build DoorDash Checkout UI. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.

Problem

Function: checkout_page(items, delivery_fee_cents, service_fee_cents, payment_methods, selected_payment_method, confirm_pressed)

Constraints

0 <= items.length <= 1000
Each item contains a non-empty name, a non-negative integer price_cents, and a positive integer quantity
0 <= delivery_fee_cents, service_fee_cents <= 100000
payment_methods contains strings
selected_payment_method is a string or null
All monetary values fit within standard integer range

Function Signature

def checkout_page(items, delivery_fee_cents, service_fee_cents, payment_methods, selected_payment_method, confirm_pressed):

Your question is Build DoorDash Checkout UI. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.