0_probabtilities.md

Run external scripts randomly according to probabilities ranging from 0.1 to 1.0

NOW WORKING: It shouldn't consecutively repeat the same item

Live testcase: http://code.runnable.com/VhI98_g33A1QxEme/probabilities-script

Old script, working fine, but consecutively repeats the same item

airplane.rb

% ruby airplane.rb
0.5
0.5
0.5
0.4
0.5
0.5

New script whose goal is to prevent repeating, NOW WORKING

airplane2.rb

% ruby airplane2.rb
...

airplane.rb

# Run external scripts randomly according to probabilities ranging from 0.1 to 1.0

require_relative "method_05.rb"
require_relative "method_04.rb"
require_relative "method_03.rb"

airplanes = {
  0.5 => [
    method(:five)
  ],
  0.4 => [
    method(:four)
  ],
  0.3 => [
    method(:three)
  ]
}

# Independent probabilities, not required to make the sum total of 1.0

probability_bottom = 0.0

airplanes_probabalized = airplanes.each_with_object({}) do |(probability, group), range|
  probability_top = probability_bottom + probability
  range[(probability_bottom...probability_top)] = group
  probability_bottom = probability_top
end

while true
  random = Kernel.rand

  airplanes_probabalized.each do |range, airplane|
    if range.include?(random)
      current_airplane = airplane.sample

      current_airplane.call

      sleep 2
    end
  end
end

airplane2.rb

# Run external scripts randomly according to probabilities ranging from 0.1 to 1.0

require_relative "method_05.rb"
require_relative "method_04.rb"
require_relative "method_03.rb"

airplanes = {
  0.5 => [
    method(:five)
  ],
  0.4 => [
    method(:four)
  ],
  0.3 => [
    method(:three)
  ]
}

# Independent probabilities, not required to make the sum total of 1.0

probability_bottom = 0.0

airplanes_probabalized = airplanes.each_with_object({}) do |(probability, group), range|
  probability_top = probability_bottom + probability
  range[(probability_bottom...probability_top)] = group
  probability_bottom = probability_top
end

previous_airplane = nil

while true
  random = Kernel.rand

  airplanes_probabalized.each do |range, airplane|
    if range.include?(random)
      current_airplane = airplane.sample

      unless previous_airplane == current_airplane
        current_airplane.call
        
        previous_airplane = current_airplane

        sleep 2
      end
    end
  end
end

method_03.rb

def three
  puts "0.3"
end

method_04.rb

def four
  puts "0.4"
end

method_05.rb

def five
  puts "0.5"
end