test

fruits.rb

# define a method `solution(a, b, c)` that calculates the total cost of buying all the fruits in a basket. 
# The method takes in three parameters:
# a: an array of strings representing the names of the fruits in the basket.
# b: an array of integers representing the prices of each fruit, in the same order as the a array.
# c: a hash that maps the names of the fruits to their corresponding discount percentages.
# The method should return a single integer - the total cost of all the fruits in the basket after applying the discounts.
# Sample input
# a = ["apple", "orange", "banana", "apple", "banana"]
# b = [50, 40, 30]
# c = { "apple" => 10, "orange" => 20, "banana" => 5 }
# Expected output :  179
# puts solution(a, b, c)

a = ["apple", "orange", "banana", "apple", "banana"]
b = [50, 40, 30]
c = { "apple" => 10, "orange" => 20, "banana" => 5 }
def solution(a, b, c)
    total_cost = 0
    a.each do |fruit|
      price = b[a.index(fruit)]
      #Assign the value of c[fruit] to the variable 'discount.'
      #If the value of c[fruit] does not exist, then discount is set to 0.
      discount = c[fruit] || 0
      total_cost += price * (1- discount / 100.0)
    end
    puts total_cost.to_i
end
puts solution(a, b, c)