Day 6 initial solution

README.md

@@ -2,7 +2,7 @@
 
 My (attempted) solutions to [Advent of Code 2020](https://adventofcode.com/2020) in Elixir.
 
-<img width="975" alt="image" src="https://user-images.githubusercontent.com/498229/101244294-f3a85380-3748-11eb-8705-cd92fa017624.png">
+<img width="986" alt="image" src="https://user-images.githubusercontent.com/498229/101272911-f8661980-37d3-11eb-93c3-f767ff22a02f.png">
 
 ## Strategy
 

day6/README

@@ -0,0 +1,27 @@
+Day 6 Notes
+
++--------+
+| Part 1 |
++--------+
+
+$ elixir day6part1.exs
+6585
+
+Thoughts:
+
+
++--------+
+| Part 2 |
++--------+
+
+$ elixir day6part2.exs
+3276
+
+Thoughts:
+
+
++------------------+
+| Overall Thoughts |
++------------------+
+
+

day6/day6part1.exs

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+defmodule Day6Part1 do
+  def run do
+    File.read!("input")
+    |> String.trim()
+    |> String.split("\n\n")
+    |> Stream.map(fn group ->
+      group
+      |> String.replace("\n", "")
+      |> String.split("", trim: true)
+      |> Enum.frequencies()
+      |> Enum.count()
+    end)
+    |> Enum.sum()
+    |> IO.puts()
+  end
+end
+
+Day6Part1.run()

day6/day6part2.exs

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+defmodule Day6Part2 do
+  def run do
+    File.read!("input")
+    |> String.trim()
+    |> String.split("\n\n")
+    |> Stream.map(fn group ->
+      count =
+        group
+        |> String.to_charlist()
+        |> Enum.count(&(&1 == ?\n))
+        |> Kernel.+(1)
+
+      group
+      |> String.replace("\n", "")
+      |> String.split("", trim: true)
+      |> Enum.frequencies()
+      |> Enum.count(fn {_, v} -> v == count end)
+    end)
+    |> Enum.sum()
+    |> IO.puts()
+  end
+end
+
+Day6Part2.run()