class ProductTable::Calculator
Public Class Methods
calculate_primes(count)
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# File lib/product_table/calculator.rb, line 9 def calculate_primes(count) return [] if count == 0 prime_numbers = [2] current = 2 while prime_numbers.size < count current += 1 prime_numbers << current if is_prime?(current) end prime_numbers end
calculate_product(numbers_list)
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# File lib/product_table/calculator.rb, line 21 def calculate_product(numbers_list) (Matrix[numbers_list].transpose * Matrix[numbers_list]).to_a end
Private Class Methods
is_prime?(number)
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# File lib/product_table/calculator.rb, line 27 def is_prime?(number) return false if number < 2 (2..number-1).count { |n| number % n == 0 } == 0 end