How should I practice Pizza Price Calculator?

Start by reading the full statement, solve the visible examples, then compare the pattern against related Microsoft onsite interview problems in FastPrep.

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FastPrep tags this as a Microsoft onsite interview coding practice problem when the problem catalog has that company and stage context.

Pizza Price Calculator

Microsoft● EasyNEW GRADONSITE INTERVIEW

Problem statement

Write a function that works out the price of a pizza from its size, its toppings, and whether it has a premium crust.

The price follows these rules:

size sets the base price: small is 5, medium is 10, and large is 15. The name must match exactly.
Each entry in toppings adds 2, even when the same topping appears more than once. toppings can be empty.
When premiumCrust is true, add 5.

Return the price. If size is not one of the three names, return -1.0.

Function

calculatePizzaPrice(size: String, toppings: String[], premiumCrust: boolean) → double

Examples

Example 1

size = "medium"toppings = ["mushroom","onion"]premiumCrust = truereturn = 19.0

A medium pizza is 10, two toppings add 4, and the premium crust adds 5: 10 + 4 + 5 = 19.

Example 2

size = "small"toppings = ["pepper"]premiumCrust = falsereturn = 7.0

A small pizza is 5, one topping adds 2, and there is no premium crust: 5 + 2 = 7.

Example 3

size = "large"toppings = ["ham","olive","basil","corn"]premiumCrust = truereturn = 28.0

A large pizza is 15, four toppings add 8, and the premium crust adds 5: 15 + 8 + 5 = 28.

Example 4

size = "huge"toppings = ["ham"]premiumCrust = truereturn = -1.0

huge is not one of the three size names, so the answer is -1.0, whatever else was ordered.

Constraints

0 <= size.length <= 10
size contains only printable ASCII characters.
0 <= toppings.length <= 100
1 <= toppings[i].length <= 20
toppings[i] contains only lowercase English letters.
premiumCrust is true or false.