diff --git a/day4.exs b/day4.exs
index 412b98f..2d37274 100644
--- a/day4.exs
+++ b/day4.exs
@@ -1,96 +1,134 @@
 defmodule DayFour do
-
   def decode_all(input) do
-    partial = input
+    partial =
+      input
       |> String.split("\n")
       |> Enum.filter(&(&1 != ""))
       |> Enum.map(&DayFour.decode_log/1)
-      |> Enum.sort_by(fn {_,_, year, month, day, hour, minute} -> year * 100000000 + month * 100000 + day * 10000 + hour * 100 + minute end)
+      |> Enum.sort_by(fn {_, _, year, month, day, hour, minute} ->
+        year * 100_000_000 + month * 100_000 + day * 10000 + hour * 100 + minute
+      end)
+
     DayFour.map_to_guard(partial, 0)
     # |> Enum.map(fn {action, guard, _, _, _, _, minute} -> {action, guard, minute} end)
   end
 
   def decode_log(log) do
     pattern = ~r/\[(\d{4})-(\d{2})-(\d{2}) (\d{2}):(\d{2})\] (wakes|falls|Guard) #?(\d{0,})/
-    [[ _ | match]] = Regex.scan(pattern, log)
+    [[_ | match]] = Regex.scan(pattern, log)
     decode_entry(match)
   end
 
   def decode_entry([year, month, day, hour, minute, "Guard", number]) do
-    {:guard, String.to_integer(number), String.to_integer(year), String.to_integer(month), String.to_integer(day), String.to_integer(hour), String.to_integer(minute)}
+    {:guard, String.to_integer(number), String.to_integer(year), String.to_integer(month),
+     String.to_integer(day), String.to_integer(hour), String.to_integer(minute)}
   end
+
   def decode_entry([year, month, day, hour, minute, "wakes", _]) do
-    {:wake, nil, String.to_integer(year), String.to_integer(month), String.to_integer(day), String.to_integer(hour), String.to_integer(minute)}
+    {:wake, nil, String.to_integer(year), String.to_integer(month), String.to_integer(day),
+     String.to_integer(hour), String.to_integer(minute)}
   end
+
   def decode_entry([year, month, day, hour, minute, "falls", _]) do
-    {:sleep, nil, String.to_integer(year), String.to_integer(month), String.to_integer(day), String.to_integer(hour), String.to_integer(minute)}
+    {:sleep, nil, String.to_integer(year), String.to_integer(month), String.to_integer(day),
+     String.to_integer(hour), String.to_integer(minute)}
   end
 
   def map_to_guard([{:guard, id, year, month, day, hour, minute} | tail], _) do
     now = {:guard, id, year, month, day, hour, minute}
     [now | map_to_guard(tail, id)]
   end
+
   def map_to_guard([now | tail], current) do
     {action, _, year, month, day, hour, minute} = now
     [{action, current, year, month, day, hour, minute} | map_to_guard(tail, current)]
   end
+
   def map_to_guard([], _), do: []
 
   def part_one(input) do
-    minutes = Enum.zip(0..60, Enum.map(0..60, fn _ -> 0 end)) |> Map.new
-    sleeping_by_guard = decode_all(input)
+    minutes = Enum.zip(0..60, Enum.map(0..60, fn _ -> 0 end)) |> Map.new()
+
+    sleeping_by_guard =
+      decode_all(input)
       |> Enum.group_by(fn {_, id, _, _, _, _, _} -> id end)
-      |> Enum.map(fn {id, list} -> {id, Enum.sort_by(list, fn {_,_, year, month, day, hour, minute} -> year * 100000000 + month * 100000 + day * 10000 + hour * 100 + minute end)} end)
+      |> Enum.map(fn {id, list} ->
+        {id,
+         Enum.sort_by(list, fn {_, _, year, month, day, hour, minute} ->
+           year * 100_000_000 + month * 100_000 + day * 10000 + hour * 100 + minute
+         end)}
+      end)
       |> Enum.map(fn {id, list} -> {id, calc_asleep_times(list, 60, minutes)} end)
-    time_by_guard = sleeping_by_guard
+
+    time_by_guard =
+      sleeping_by_guard
       |> Enum.map(fn {id, times} -> {id, Map.to_list(times)} end)
       |> Enum.sort_by(fn {_, times} -> List.foldl(times, 0, fn {_, c}, acc -> c + acc end) end)
-      |> Enum.reverse
+      |> Enum.reverse()
+
     [longest_sleeper | _] = time_by_guard
     {id, times} = longest_sleeper
-    minutes = times
+
+    minutes =
+      times
       |> Enum.sort_by(fn {_, time} -> time end)
-      |> Enum.reverse
-    [{longest_minute, _} | _ ] = minutes
+      |> Enum.reverse()
+
+    [{longest_minute, _} | _] = minutes
     "(id: #{id}, minute: #{longest_minute})"
   end
 
   def calc_asleep_times([{:guard, _, _, _, _, _, _} | tail], 60, acc) do
     calc_asleep_times(tail, 60, acc)
   end
+
   def calc_asleep_times([{:guard, _, _, _, _, _, _} | tail], last, acc) do
     times = Enum.to_list(last..60)
     calc_asleep_times(tail, 60, increment_map(times, acc))
   end
+
   def calc_asleep_times([{:sleep, _, _, _, _, _, minute} | tail], _, acc) do
     calc_asleep_times(tail, minute, acc)
   end
+
   def calc_asleep_times([{:wake, _, _, _, _, _, minute} | tail], last, acc) do
     times = Enum.to_list(last..minute)
     calc_asleep_times(tail, 60, increment_map(times, acc))
   end
+
   def calc_asleep_times([], 60, acc), do: acc
   def calc_asleep_times([], last, acc), do: increment_map(Enum.to_list(last..60), acc)
 
   def increment_map([head | tail], acc) do
-    increment_map(tail, Map.update!(acc, head, &( &1 + 1)))
+    increment_map(tail, Map.update!(acc, head, &(&1 + 1)))
   end
+
   def increment_map([], acc), do: acc
 
-  def part_two(input) do 
-    minutes = Enum.zip(0..60, Enum.map(0..60, fn _ -> 0 end)) |> Map.new
-    sleeping_by_guard = decode_all(input)
+  def part_two(input) do
+    minutes = Enum.zip(0..60, Enum.map(0..60, fn _ -> 0 end)) |> Map.new()
+
+    sleeping_by_guard =
+      decode_all(input)
       |> Enum.group_by(fn {_, id, _, _, _, _, _} -> id end)
-      |> Enum.map(fn {id, list} -> {id, Enum.sort_by(list, fn {_,_, year, month, day, hour, minute} -> year * 100000000 + month * 100000 + day * 10000 + hour * 100 + minute end)} end)
+      |> Enum.map(fn {id, list} ->
+        {id,
+         Enum.sort_by(list, fn {_, _, year, month, day, hour, minute} ->
+           year * 100_000_000 + month * 100_000 + day * 10000 + hour * 100 + minute
+         end)}
+      end)
       |> Enum.map(fn {id, list} -> {id, calc_asleep_times(list, 60, minutes)} end)
-    {id, {minute, time}} = sleeping_by_guard
+
+    {id, {minute, time}} =
+      sleeping_by_guard
       |> Enum.map(fn {id, sleeps} -> {id, Enum.max_by(sleeps, fn {minute, time} -> time end)} end)
       |> Enum.max_by(fn {id, {minute, time}} -> time end)
+
     "id: #{id} minute: #{minute} times: #{time}"
-  end 
+  end
 end
 
-{:ok, content} = File.read "input4.txt"
+{:ok, content} = File.read("input4.txt")
 
-IO.puts "Part 1: #{DayFour.part_one(content)}"
-IO.puts "Part 2: #{DayFour.part_two(content)}"
+IO.puts("Part 1: #{DayFour.part_one(content)}")
+IO.puts("Part 2: #{DayFour.part_two(content)}")
diff --git a/day5.exs b/day5.exs
index 890ffba..f9c0ee0 100644
--- a/day5.exs
+++ b/day5.exs
@@ -2,15 +2,16 @@ defmodule DayFive do
   def part_one(input) do
     shortened = fully_react_new(input)
     # IO.puts shortened
-    (String.length shortened) - 1
+    String.length(shortened) - 1
   end
 
   def fully_react(input) do
-    replacer = ~r/Aa|Bb|Cc|Dd|Ee|Ff|Gg|Hh|Ii|Jj|Kk|Ll|Mm|Nn|Oo|Pp|Qq|Rr|Ss|Tt|Uu|Ww|Vv|Xx|Yy|Zz|aA|bB|cC|dD|eE|fF|gG|hH|iI|jJ|kK|lL|mM|nN|oO|pP|qQ|rR|sS|tT|uU|wW|vV|xX|yY|zZ/
+    replacer =
+      ~r/Aa|Bb|Cc|Dd|Ee|Ff|Gg|Hh|Ii|Jj|Kk|Ll|Mm|Nn|Oo|Pp|Qq|Rr|Ss|Tt|Uu|Ww|Vv|Xx|Yy|Zz|aA|bB|cC|dD|eE|fF|gG|hH|iI|jJ|kK|lL|mM|nN|oO|pP|qQ|rR|sS|tT|uU|wW|vV|xX|yY|zZ/
+
     replace_forever(input, replacer, "")
   end
 
-
   def replace_forever(string, pattern, replacement) do
     if Regex.match?(pattern, string) do
       replace_forever(Regex.replace(pattern, string, replacement), pattern, replacement)
@@ -19,34 +20,40 @@ defmodule DayFive do
     end
   end
 
-  def react([<< char1 >> , << char2 >> | tail]) when char1 == char2 - 32 or char2 == char1 - 32, do: react(tail)
+  def react([<<char1>>, <<char2>> | tail]) when char1 == char2 - 32 or char2 == char1 - 32,
+    do: react(tail)
+
   def react([char | tail]), do: [char | react(tail)]
   def react(""), do: []
   def react([]), do: []
 
   def fully_react_new(input) do
     # IO.puts "mark"
-    Enum.join( fully_react_new(String.codepoints(input), []) )
+    Enum.join(fully_react_new(String.codepoints(input), []))
   end
 
   def fully_react_new(input, acc) when input == acc, do: acc
+
   def fully_react_new(input, _acc) do
     # IO.puts("#{length _acc} #{length input}")
     fully_react_new(react(input), input)
   end
 
   def part_two(input) do
-    chars = Enum.map(?a..?z, &(<< &1 >>))
-    [{_char, poly} | _ ] = Enum.map(chars, fn char -> {char, String.replace(input, char, "")} end)
-        |> Enum.map(fn {char, poly} -> {char, String.replace(poly, String.upcase(char), "") } end)
-        |> Enum.map(fn {char, poly} -> {char, fully_react_new(poly)} end)
-        |> Enum.sort_by(fn {_char, poly} -> String.length(poly) end)
+    chars = Enum.map(?a..?z, &<<&1>>)
+
+    [{_char, poly} | _] =
+      Enum.map(chars, fn char -> {char, String.replace(input, char, "")} end)
+      |> Enum.map(fn {char, poly} -> {char, String.replace(poly, String.upcase(char), "")} end)
+      |> Enum.map(fn {char, poly} -> {char, fully_react_new(poly)} end)
+      |> Enum.sort_by(fn {_char, poly} -> String.length(poly) end)
+
     # IO.puts poly
     String.length(poly) - 1
   end
 end
 
-{:ok, content} = File.read "input5.txt"
+{:ok, content} = File.read("input5.txt")
 
-IO.puts "Part 1: #{DayFive.part_one(content)}"
-IO.puts "Part 2: #{DayFive.part_two(content)}"
+IO.puts("Part 1: #{DayFive.part_one(content)}")
+IO.puts("Part 2: #{DayFive.part_two(content)}")
diff --git a/day5_doublelinked.exs b/day5_doublelinked.exs
index 3c99ef2..4f6c72d 100644
--- a/day5_doublelinked.exs
+++ b/day5_doublelinked.exs
@@ -2,25 +2,29 @@ defmodule DayFive do
   def part_one(input) do
     shortened = fully_react_new(input)
     # IO.puts shortened
-    (String.length shortened) - 1
+    String.length(shortened) - 1
   end
 
-  def fully_react(input) do
-    replacer = ~r/Aa|Bb|Cc|Dd|Ee|Ff|Gg|Hh|Ii|Jj|Kk|Ll|Mm|Nn|Oo|Pp|Qq|Rr|Ss|Tt|Uu|Ww|Vv|Xx|Yy|Zz|aA|bB|cC|dD|eE|fF|gG|hH|iI|jJ|kK|lL|mM|nN|oO|pP|qQ|rR|sS|tT|uU|wW|vV|xX|yY|zZ/
-    replace_forever(input, replacer, "")
+  def part_two(input) do
+    chars = Enum.map(?a..?z, &<<&1>>)
+
+    [{_char, poly} | _] =
+      Enum.map(chars, fn char -> {char, String.replace(input, char, "")} end)
+      |> Enum.map(fn {char, poly} -> {char, String.replace(poly, String.upcase(char), "")} end)
+      |> Enum.map(fn {char, poly} -> {char, fully_react_new(poly)} end)
+      |> Enum.sort_by(fn {_char, poly} -> String.length(poly) end)
+
+    # IO.puts poly
+    String.length(poly) - 1
   end
 
+  def react([<<char1>>, <<char2>> | tail], rev) when char1 == char2 - 32 or char2 == char1 - 32,
+    do: react(tail, rev)
 
-  def replace_forever(string, pattern, replacement) do
-    if Regex.match?(pattern, string) do
-      replace_forever(Regex.replace(pattern, string, replacement), pattern, replacement)
-    else
-      string
-    end
-  end
+  def react([<<char1>> | tail], [<<char2>> | rev])
+      when char1 == char2 - 32 or char2 == char1 - 32,
+      do: react(tail, rev)
 
-  def react([<< char1 >> , << char2 >> | tail], rev) when char1 == char2 - 32 or char2 == char1 - 32, do: react(tail, rev)
-  def react([<< char1 >> | tail], [<< char2 >> | rev]) when char1 == char2 - 32 or char2 == char1 - 32, do: react(tail, rev)
   def react([char | tail], rev), do: react(tail, [char | rev])
   def react("", rev), do: rev
   def react([], rev), do: rev
@@ -29,25 +33,9 @@ defmodule DayFive do
     # IO.puts "mark"
     String.reverse(Enum.join(react(String.codepoints(input), [])))
   end
-
-  #def fully_react_new(input, acc) when input == acc, do: acc
-  #def fully_react_new(input, _acc) do
-    # IO.puts("#{length _acc} #{length input}")
-    #  fully_react_new(react(input), input)
-  #end
-
-  def part_two(input) do
-    chars = Enum.map(?a..?z, &(<< &1 >>))
-    [{_char, poly} | _ ] = Enum.map(chars, fn char -> {char, String.replace(input, char, "")} end)
-        |> Enum.map(fn {char, poly} -> {char, String.replace(poly, String.upcase(char), "") } end)
-        |> Enum.map(fn {char, poly} -> {char, fully_react_new(poly)} end)
-        |> Enum.sort_by(fn {_char, poly} -> String.length(poly) end)
-    # IO.puts poly
-    String.length(poly) - 1
-  end
 end
 
-{:ok, content} = File.read "input5.txt"
+{:ok, content} = File.read("input5.txt")
 
-IO.puts "Part 1: #{DayFive.part_one(content)}"
-IO.puts "Part 2: #{DayFive.part_two(content)}"
+IO.puts("Part 1: #{DayFive.part_one(content)}")
+IO.puts("Part 2: #{DayFive.part_two(content)}")