Queues -Hyunji Kim - solar_system.rb

solar_system.rb

@@ -0,0 +1,130 @@
+#testing out the github commands
+class Planet
+  attr_accessor :name, :distance_from_the_sun, :radius, :mass, :moons, :density, :gravity, :rate_solar_rotation
+
+  def initialize(planet_hash)
+    @name = planet_hash[:name]
+    @distance_from_the_sun = planet_hash[:distance_from_the_sun]
+    @radius = planet_hash[:radius]
+    @mass = planet_hash[:mass]
+    @moons = planet_hash[:moons]
+    @density = planet_hash[:density]
+    @gravity = planet_hash[:gravity]
+    @rate_solar_rotation = planet_hash[:rate_solar_rotation]
+  end
+
+  def info
+    puts "\nPlanet #{@name}'s' radius is #{@radius} and its mass is #{@mass}. It is #{@distance_from_the_sun} miles away from the Sun and has #{@moons} moon(s)."
+    puts "Its density is #{@density} and its gravity is #{@gravity}. "
+  end
+
+end
+
+
+class SolarSystem
+  attr_accessor :planets
+
+  def initialize
+    @planets = []
+  end
+
+  def add_a_planet(planet)
+
+    @planets.push (planet)
+  end
+
+  def add_a_list(more_planets)
+    @planets += more_planets.planets
+  end
+
+  def find_planet(planet_name) #solar_system.find_planet(whatever).distance_from_the_sun
+    i = 0
+    @planets.length.times do
+      if planet_name.downcase == @planets[i].name.downcase
+        return @planets[i]
+        break
+      else
+        i = i + 1
+      end
+    end
+  end
+
+  def distance(planetA_name, planetB_name)   #example: solar_system.distance("mercury", "earth")
+    planetA = self.find_planet(planetA_name)
+    planetB = self.find_planet(planetB_name)
+    mi_between_planets = (planetA.distance_from_the_sun.delete(',').to_i - planetB.distance_from_the_sun.delete(',').to_i ).abs
+  end
+
+end
+
+solar_system= SolarSystem.new
+
+solar_system.add_a_planet(Planet.new(name: "Jupiter", distance_from_the_sun: "483,600,000", radius: "43,441 mi", mass: "1.898 × 10^27 kg", moons: 16, density: "1.33 g/cm³", gravity: "24.79 m/s²", rate_solar_rotation: 0.416))
+
+solar_system.add_a_planet(Planet.new(name: "Saturn", distance_from_the_sun: "886,700,000", radius: "36,184 mi", mass: "5.683 × 10^26 kg", moons: 53, density: "687 kg/m³",gravity: "10.44 m/s²", rate_solar_rotation: 0.437))
+
+solar_system.add_a_planet(Planet.new(name: "Mercury", distance_from_the_sun: "36,000,000", radius: "1,516 mi", mass: "3.285 × 10^23 kg", moons: 0, density: "5.43 g/cm³", gravity: "3.7 m/s²", rate_solar_rotation: 58.64))
+
+solar_system.add_a_planet(Planet.new(name: "Venus", distance_from_the_sun: "67,200,000", radius: "3,760 mi", mass: "4.867 × 10^24 kg", moons: 0, density: "5.24 g/cm³", gravity: "8.87 m/s²", rate_solar_rotation: 243.02))
+
+solar_system.add_a_planet(Planet.new(name: "Mars", distance_from_the_sun: "141,600,000", radius: "2,106 mi", mass: "6.39 × 10^23 kg", moons: 2, density: "3.93 g/cm³", gravity: "3.711 m/s²", rate_solar_rotation: 1.02))
+
+more_solar_system = SolarSystem.new
+
+more_solar_system.add_a_planet(Planet.new(name: "Earth", distance_from_the_sun: "92,960,000", radius: "3,959 mi", mass: "5.972 × 10^24 kg", moons: 0, density: "5.51 g/cm³", gravity: "9.807 m/s²", rate_solar_rotation: 365))
+more_solar_system.add_a_planet(Planet.new(name: "Uranus", distance_from_the_sun: "1,784,000,000", radius: "15,759 mi", mass: "8.681 × 10^25 kg", moons: 27, density: "1.27 g/cm³", gravity: "8.69 m/s²", rate_solar_rotation: 0.7))
+
+
+solar_system.add_a_list(more_solar_system)
+
+
+
+print "Choose the planet you want to learn about.\nChoose from Jupiter, Saturn, Mercury, Venus, Mars, Earth, Uranus (N to quit): "
+entered_planet = gets.chomp.downcase
+while true
+  if entered_planet.downcase == "n"
+    break
+  else
+    num = 0
+    info_planet = nil
+    while info_planet == nil
+      i = 0
+      solar_system.planets.length.times do
+        if entered_planet == solar_system.planets[i].name.downcase
+          info_planet = entered_planet
+          num = i
+          break
+        else
+          i += 1
+        end
+      end
+      if info_planet != nil
+        break
+      else
+      print "Re-Enter the name of a planet you want to learn about.\nChoose from Jupiter, Saturn, Mercury, Venus, Mars, Earth, Uranus: "
+      entered_planet = gets.chomp.downcase
+      end
+    end
+  end
+  puts solar_system.planets[num].info
+  print "Choose the planet you want to learn about.\nChoose from Jupiter, Saturn, Mercury, Venus, Mars, Earth, Uranus (N to quit): "
+  entered_planet = gets.chomp.downcase
+end
+
+print "Do you want to know the distance between planets? (Y to continue, N to quit)"
+answer_dis = gets.chomp.downcase
+
+def separate_comma(number)
+  number.to_s.chars.to_a.reverse.each_slice(3).map(&:join).join(",").reverse
+end
+
+if answer_dis == "n"
+  exit
+else
+  print "Enter the first planet. Jupiter, Saturn, Mercury, Venus, Mars, Earth, Uranus: "
+  f_planet = gets.chomp
+  print "Enter the second planet. Jupiter, Saturn, Mercury, Venus, Mars, Earth, Uranus: "
+  s_planet = gets.chomp
+  distance = separate_comma(solar_system.distance(f_planet, s_planet))
+  puts "Distance between #{f_planet.capitalize} and #{s_planet.capitalize} is #{distance} miles."
+end