monte_carlo_liz.rb

class PI
  
  @@TIME = 10000000
  attr :circle, :square
  
  def initialize
    @circle = 0
    @square = 0
    calculate_pi
  end
  
  def generate_length
    a = rand(10).to_f/10
    b = rand(10).to_f/10
    Math.sqrt(a * a + b * b)
  end
  
  def calculate_pi
    @@TIME.times do |t|
      length = generate_length
      if length >= 1
        @square += 1
      else
        @square += 1
        @circle += 1
      end
    end
    puts @circle
    puts @square
    pi = @circle/@square.to_f * 4
  end  
end

pi = PI.new