Created
October 10, 2018 20:54
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module RunStrategies | |
class RunStrategyInterface | |
def self.run(name) | |
raise "Run method has not been implemented!" | |
end | |
end | |
class Jog < RunStrategyInterface | |
def self.run(name) | |
puts "#{name} is now jogging at a comfortable pace." | |
end | |
end | |
class Sprint < RunStrategyInterface | |
def self.run(name) | |
puts "#{name} is now sprinting full speeed!" | |
end | |
end | |
class Marathon < RunStrategyInterface | |
def self.run(name) | |
puts "#{name} is now running at a steady pace." | |
end | |
end | |
end | |
class Runner | |
attr_reader :name, :strategy | |
attr_writer :strategy | |
def initialize(name, strategy) | |
@name = name | |
@strategy = strategy | |
end | |
def run | |
@strategy.run(@name) | |
end | |
end | |
class Race | |
attr_reader :runners | |
def initialize(runners) | |
@runners = runners | |
end | |
def start | |
@runners.each { |runner| runner.run } | |
end | |
end | |
alice_ruby = Runner.new("Alice Ruby", RunStrategies::Jog) | |
florence_joyner = Runner.new("Florence Joyner", RunStrategies::Sprint) | |
eliud_kipchoge = Runner.new("Eliud Kipchoge", RunStrategies::Marathon) | |
race = Race.new([alice_ruby, florence_joyner, eliud_kipchoge]) | |
race.start | |
# Alice Ruby is now jogging at a comfortable pace. | |
# Florence Joyner is now sprinting full speeed! | |
# Eliud Kipchoge is now running at a steady pace. |
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