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Add solar system file #18

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Add solar system file #18

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24 changes: 24 additions & 0 deletions solar-system.rb
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Original file line number Diff line number Diff line change
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class SolarSystem
attr_accessor :planets, :name, :formation_year

def initialize(name = "The Solar System", formation_year = 1234)
@name = name
@formation_year = formation_year
@planets = []
end

def add_planet(planet)
planet.solar_system = self
@planets.push(planet)
end

def add_many_planets(planet_array)
planet_array.each { |planet| planet.solar_system = self }
@planets += planet_array
end

def distance_between(planet_one, planet_two)
(planet_one.distance_from_sun - planet_two.distance_from_sun).abs
end

end