From 766ae24cb27c2194b3b521c43f0929292aeb8901 Mon Sep 17 00:00:00 2001
From: Sloane Perrault <sloane.perrault@gmail.com>
Date: Wed, 21 Sep 2022 09:19:53 -0400
Subject: [PATCH] day 1 cleanup

---
 2021/lib/advent_of_code/day01.ex              | 21 +++++++------------
 .../test/advent_of_code/day01/part_1_test.exs |  2 +-
 .../test/advent_of_code/day01/part_2_test.exs |  3 +--
 3 files changed, 9 insertions(+), 17 deletions(-)

diff --git a/2021/lib/advent_of_code/day01.ex b/2021/lib/advent_of_code/day01.ex
index f4d9eef..9f69f13 100644
--- a/2021/lib/advent_of_code/day01.ex
+++ b/2021/lib/advent_of_code/day01.ex
@@ -7,6 +7,7 @@ defmodule AdventOfCode.Day01 do
     input_stream
     |> Stream.map(&String.trim/1)
     |> Stream.map(&String.to_integer/1)
+    |> Enum.to_list()
   end
 end
 
@@ -22,22 +23,15 @@ defmodule AdventOfCode.Day01.Part1 do
 
   @impl PuzzleSolver
   def solve(input_stream) do
-    depth_stream =
-      input_stream
-      |> parse_input_stream()
-      |> Enum.to_list()
+    depths = parse_input_stream(input_stream)
 
-    Enum.zip_with(
-      depth_stream,
-      Enum.drop(depth_stream, 1),
-      &</2
+    Enum.zip_reduce(
+      depths,
+      Enum.drop(depths, 1),
+      0,
+      &if(&1 < &2, do: &3 + 1, else: &3)
     )
-    |> Stream.filter(&is_true?/1)
-    |> Enum.count()
   end
-
-  defp is_true?(true), do: true
-  defp is_true?(_), do: false
 end
 
 defmodule AdventOfCode.Day01.Part2 do
@@ -53,7 +47,6 @@ defmodule AdventOfCode.Day01.Part2 do
   @impl PuzzleSolver
   def solve(input_stream) do
     parse_input_stream(input_stream)
-    |> Enum.to_list()
     |> window_increases()
   end
 
diff --git a/2021/test/advent_of_code/day01/part_1_test.exs b/2021/test/advent_of_code/day01/part_1_test.exs
index 365f0a3..b1ca9a5 100644
--- a/2021/test/advent_of_code/day01/part_1_test.exs
+++ b/2021/test/advent_of_code/day01/part_1_test.exs
@@ -1,7 +1,7 @@
 defmodule AdventOfCode.Day01.Part1Test do
   use AdventOfCode.PuzzleCase, module: AdventOfCode.Day01.Part1
 
-  test "returns :ok" do
+  test "solves for a small input" do
     input = ~S"""
     199
     200
diff --git a/2021/test/advent_of_code/day01/part_2_test.exs b/2021/test/advent_of_code/day01/part_2_test.exs
index a0c7115..7a09811 100644
--- a/2021/test/advent_of_code/day01/part_2_test.exs
+++ b/2021/test/advent_of_code/day01/part_2_test.exs
@@ -1,7 +1,7 @@
 defmodule AdventOfCode.Day01.Part2Test do
   use AdventOfCode.PuzzleCase, module: AdventOfCode.Day01.Part2
 
-  test "returns :ok" do
+  test "solves for a small input" do
     input = ~S"""
     199
     200
@@ -18,4 +18,3 @@ defmodule AdventOfCode.Day01.Part2Test do
     assert_solution(input, 5)
   end
 end
-