Contents

defmodule Triangle do
  def kind(a, b, c), do: kind(Enum.sort([a, b, c]))

  defp kind([a, _, _]) when a <= 0, do: {:error, "all side lengths must be positive"}
  defp kind([a, b, c]) when a + b <= c, do: {:error, "side lengths violate triangle inequality"}
  defp kind([x, x, x]), do: {:ok, :equilateral}
  defp kind([x, x, _]), do: {:ok, :isosceles}
  defp kind([_, x, x]), do: {:ok, :isosceles}
  defp kind([_, _, _]), do: {:ok, :scalene}
end

Version data entries

69 entries across 69 versions & 1 rubygems

Version	Path
trackler-2.2.1.180	tracks/elixir/exercises/triangle/example.exs
trackler-2.2.1.179	tracks/elixir/exercises/triangle/example.exs
trackler-2.2.1.178	tracks/elixir/exercises/triangle/example.exs
trackler-2.2.1.177	tracks/elixir/exercises/triangle/example.exs
trackler-2.2.1.176	tracks/elixir/exercises/triangle/example.exs
trackler-2.2.1.175	tracks/elixir/exercises/triangle/example.exs
trackler-2.2.1.174	tracks/elixir/exercises/triangle/example.exs
trackler-2.2.1.173	tracks/elixir/exercises/triangle/example.exs
trackler-2.2.1.172	tracks/elixir/exercises/triangle/example.exs
trackler-2.2.1.171	tracks/elixir/exercises/triangle/example.exs
trackler-2.2.1.170	tracks/elixir/exercises/triangle/example.exs
trackler-2.2.1.169	tracks/elixir/exercises/triangle/example.exs
trackler-2.2.1.167	tracks/elixir/exercises/triangle/example.exs
trackler-2.2.1.166	tracks/elixir/exercises/triangle/example.exs
trackler-2.2.1.165	tracks/elixir/exercises/triangle/example.exs
trackler-2.2.1.164	tracks/elixir/exercises/triangle/example.exs
trackler-2.2.1.163	tracks/elixir/exercises/triangle/example.exs
trackler-2.2.1.162	tracks/elixir/exercises/triangle/example.exs
trackler-2.2.1.161	tracks/elixir/exercises/triangle/example.exs
trackler-2.2.1.160	tracks/elixir/exercises/triangle/example.exs