Question

How to calculate the dot product of two arrays in Ruby

Answer 1

def calculate_dot_product(arr1, arr2)
  product = 0
  size = arr1.length

  (0...size).each do |i|
    product += arr1[i] * arr2[i]
  end

  product
end

arr1 = [1, 4, 8, 9, 6]
arr2 = [0, 7, 1, 3, 40]

puts "Dot product = #{calculate_dot_product(arr1, arr2)}"




=begin
run:

Dot product = 303

=end

 

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