Data commit

Task/Ranking-methods/Elixir/ranking-methods.elixir

@@ -0,0 +1,33 @@
+defmodule Ranking do
+  def methods(data) do
+    IO.puts "stand.\tmod.\tdense\tord.\tfract."
+    Enum.group_by(data, fn {score,_name} -> score end)
+    |> Enum.map(fn {score,pairs} ->
+         names = Enum.map(pairs, fn {_,name} -> name end) |> Enum.reverse
+         {score, names}
+       end)
+    |> Enum.sort_by(fn {score,_} -> -score end)
+    |> Enum.with_index
+    |> Enum.reduce({1,0,0}, fn {{score, names}, i}, {s_rnk, m_rnk, o_rnk} ->
+         d_rnk = i + 1
+         m_rnk = m_rnk + length(names)
+         f_rnk = ((s_rnk + m_rnk) / 2) |> to_string |> String.replace(".0","")
+         o_rnk = Enum.reduce(names, o_rnk, fn name,acc ->
+           IO.puts "#{s_rnk}\t#{m_rnk}\t#{d_rnk}\t#{acc+1}\t#{f_rnk}\t#{score} #{name}"
+           acc + 1
+         end)
+         {s_rnk+length(names), m_rnk, o_rnk}
+       end)
+  end
+end
+
+~w"44 Solomon
+   42 Jason
+   42 Errol
+   41 Garry
+   41 Bernard
+   41 Barry
+   39 Stephen"
+|> Enum.chunk(2)
+|> Enum.map(fn [score,name] -> {String.to_integer(score),name} end)
+|> Ranking.methods