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Project Euler Problem 1

/ Published in: Ruby
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  1. class Euler1
  2.  
  3.     # ===================================================================================
  4.     # Private Members                                                     Private Members
  5.     # ===================================================================================
  6.  
  7.     private
  8.  
  9.     def initialize ceiling, naturals
  10.         @ceiling_number = ceiling
  11.         @natural_numbers_array = naturals
  12.         @current_number = 0
  13.         @sum = 0
  14.  
  15.         determine_sum_of_naturals
  16.     end
  17.  
  18.  
  19.     def determine_sum_of_naturals
  20.         while @current_number < @ceiling_number
  21.             if divisible_by_natural_numbers? @current_number
  22.                 @sum += @current_number
  23.             end
  24.  
  25.             @current_number += 1
  26.         end
  27.     end
  28.  
  29.  
  30.     def divisible_by_natural_numbers? number_in_question
  31.         @natural_numbers_array.each do |natural|
  32.             if number_in_question/natural == (number_in_question/natural).floor
  33.                 return true
  34.             end
  35.         end
  36.     end
  37.  
  38.     # ===================================================================================
  39.     # Public Members                                                       Public Members
  40.     # ===================================================================================
  41.  
  42.     public
  43.  
  44.     def get_sum
  45.         @sum
  46.     end
  47.  
  48. end
  49.  
  50. xxx = Euler1.new 1000, [3,5]
  51. puts xxx.get_sum

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