Wayfair Machine Coding Practice 2

Round 1

Questions:

Problem Statement:

Design an Order Management System for an e-commerce platform with the following features:

• Add items to the cart → addItemToCart(userId, itemId, quantity)
• Remove items from the cart → removeItemFromCart(userId, itemId)
• Calculate the total price → calculateTotal(userId)
• Apply tax (10%) and discounts (5% off if total > $100)
• Checkout the cart → checkout(userId)

Constraints:

• The system should handle multiple users independently.
• Invalid item IDs should throw an error.
• Orders above $100 should get a 5% discount.
• Prices are predefined in the system.