Initial upload

elixir/need-for-speed/lib/need_for_speed.ex

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+defmodule NeedForSpeed do
+  # Add missing aliases and imports here.
+  alias NeedForSpeed.Race, as: Race
+  alias NeedForSpeed.RemoteControlCar, as: Car
+  import IO, only: [puts: 1]
+  import IO.ANSI, except: [color: 1]
+  # Do not edit the code below.
+
+  def print_race(%Race{} = race) do
+    puts("""
+    🏁 #{race.title} 🏁
+    Status: #{Race.display_status(race)}
+    Distance: #{Race.display_distance(race)}
+
+    Contestants:
+    """)
+
+    race.cars
+    |> Enum.sort_by(&(-1 * &1.distance_driven_in_meters))
+    |> Enum.with_index()
+    |> Enum.each(fn {car, index} -> print_car(car, index + 1) end)
+  end
+
+  defp print_car(%Car{} = car, index) do
+    color = color(car)
+
+    puts("""
+      #{index}. #{color}#{car.nickname}#{default_color()}
+      Distance: #{Car.display_distance(car)}
+      Battery: #{Car.display_battery(car)}
+    """)
+  end
+
+  defp color(%Car{} = car) do
+    case car.color do
+      :red -> red()
+      :blue -> cyan()
+      :green -> green()
+    end
+  end
+end

elixir/need-for-speed/lib/need_for_speed/race.ex

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+defmodule NeedForSpeed.Race do
+  defstruct [
+    :title,
+    :total_distance_in_meters,
+    cars: []
+  ]
+
+  def display_status(%NeedForSpeed.Race{} = race) do
+    cond do
+      Enum.any?(race.cars, &(&1.distance_driven_in_meters >= race.total_distance_in_meters)) ->
+        "Finished"
+
+      Enum.any?(race.cars, &(&1.distance_driven_in_meters > 0)) ->
+        "In Progress"
+
+      true ->
+        "Not Started"
+    end
+  end
+
+  def display_distance(%NeedForSpeed.Race{total_distance_in_meters: d}) do
+    "#{d} meters"
+  end
+end

elixir/need-for-speed/lib/need_for_speed/remote_control_car.ex

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+defmodule NeedForSpeed.RemoteControlCar do
+  defstruct [
+    :nickname,
+    :color,
+    battery_percentage: 100,
+    distance_driven_in_meters: 0
+  ]
+
+  def new(color, nickname) when color in [:red, :blue, :green] do
+    %NeedForSpeed.RemoteControlCar{nickname: nickname, color: color}
+  end
+
+  def display_distance(%NeedForSpeed.RemoteControlCar{distance_driven_in_meters: d}) do
+    "#{d} meters"
+  end
+
+  def display_battery(%NeedForSpeed.RemoteControlCar{battery_percentage: 0}) do
+    "Battery empty"
+  end
+
+  def display_battery(%NeedForSpeed.RemoteControlCar{battery_percentage: b}) do
+    "Battery at #{b}%"
+  end
+end