How should I practice Shopping Cart Billing?

Start by reading the full statement, solve the visible examples, then compare the pattern against related Amazon online assessment problems in FastPrep.

Is Shopping Cart Billing associated with Amazon?

FastPrep tags this as a Amazon online assessment coding practice problem when the problem catalog has that company and stage context.

Shopping Cart Billing

Amazon● EasyINTERNOA

Problem statement

An online store is holding a sale for its members. Every product has a retail price and may carry some discount tags. A member always pays the lowest price available for a product.

Each row products[i] describes one product:

products[i][0] is the retail price.
Every later entry is the name of a discount tag on that product, or "EMPTY" for an unused slot.

Each row discounts[j] = [tag, type, amount] describes one discount tag. In the rules below, price is the product's retail price. There are three tag types:

The problem statement continues

Pro

Examples

Example 1

products = [["10","d0","d1"],["15","EMPTY","EMPTY"],["20","d1","EMPTY"]]discounts = [["d0","1","27"],["d1","2","5"]]return = 35

Product 0 has retail price 10. Tag d0 gives 10 * 73 / 100 = 7.3, which drops to 7. Tag d1 gives 10 - 5 = 5. The lowest price is 5.
Product 1 has no tags, so it costs 15.
Product 2 has retail price 20. Tag d1 gives 20 - 5 = 15, so it costs 15.

The total is 5 + 15 + 15 = 35.

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