Problem Statement
In Russia, the Value Added Tax is 18% for almost all goods, with the exception of certain food items, which have a Value Added Tax of only 10%.
You are given a String product, the name of a product, and an int price, the price of the product before tax. You are also given a String[] food, each element of which is the name of a food product. If the given product is an element in food, it is a food item (and thus subject to 10% tax), and otherwise, it is a non-food item (and thus subject to 18% tax). Return the price of the product after tax has been added.
Definition
- Class:
- ValueAddedTax
- Method:
- calculateFinalPrice
- Parameters:
- String, int, String[]
- Returns:
- double
- Method signature:
- double calculateFinalPrice(String product, int price, String[] food)
- (be sure your method is public)
Notes
- The returned value must have an absolute or relative error less than 1e-9.
Constraints
- product will contain between 1 and 50 characters, inclusive.
- Each character in product will be a lowercase letter ('a'-'z').
- price will be between 1 and 1000, inclusive.
- food will contain between 1 and 50 elements, inclusive.
- Each element of food will contain between 1 and 50 characters, inclusive.
- Each character in each element of food will be a lowercase letter ('a'-'z').
- All elements of food will be distinct.
Examples
"milk"
1
{"bread", "butter", "milk"}Returns: 1.1
"car"
100
{"bread", "butter", "milk"}Returns: 118.0
"abc"
57
{"a", "b", "c"}Returns: 67.25999999999999
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