From 6835506dea6b3c55ed463ef49049d70c6c6cedc9 Mon Sep 17 00:00:00 2001
From: Lucas Schwiderski <lucas@lschwiderski.de>
Date: Thu, 9 Dec 2021 09:01:34 +0100
Subject: [PATCH] feat: Day 1

---
 puzzles/01_1/main.rb | 16 ++++++++++++++++
 puzzles/01_2/main.rb | 37 +++++++++++++++++++++++++++++++++++++
 run.rb               | 13 +++++++++++++
 3 files changed, 66 insertions(+)
 create mode 100644 puzzles/01_1/main.rb
 create mode 100644 puzzles/01_2/main.rb
 create mode 100755 run.rb

diff --git a/puzzles/01_1/main.rb b/puzzles/01_1/main.rb
new file mode 100644
index 0000000..8bbbdb6
--- /dev/null
+++ b/puzzles/01_1/main.rb
@@ -0,0 +1,16 @@
+def run(f)
+    increments = 0
+    previous = nil
+
+    f.each do |line|
+        measurement = Integer(line)
+
+        if previous and measurement > previous
+            increments += 1
+        end
+
+        previous = measurement
+    end
+
+    return increments
+end
diff --git a/puzzles/01_2/main.rb b/puzzles/01_2/main.rb
new file mode 100644
index 0000000..44c10d3
--- /dev/null
+++ b/puzzles/01_2/main.rb
@@ -0,0 +1,37 @@
+def shift(arr)
+    arr[0] = arr[1]
+    arr[1] = arr[2]
+    arr[2] = arr[3]
+    arr[3] = []
+end
+
+def push(arr, val)
+    shift(arr)
+
+    if arr[1]
+        arr[1] << val
+    end
+
+    if arr[2]
+        arr[2] << val
+    end
+
+    arr[3] << val
+end
+
+def run(f)
+    increments = 0
+    buffer = []
+
+    f.each do |line|
+        measurement = Integer(line)
+
+        push(buffer, measurement)
+
+        if buffer[0] and buffer[1] and buffer[0].length() == 3 and buffer[1].length() == 3 and buffer[1].sum() > buffer[0].sum()
+            increments += 1
+        end
+    end
+
+    return increments
+end
diff --git a/run.rb b/run.rb
new file mode 100755
index 0000000..4302903
--- /dev/null
+++ b/run.rb
@@ -0,0 +1,13 @@
+#!/usr/bin/env ruby
+
+puzzle = (ARGV[0] ? ARGV[0] : '1').rjust(2, '0')
+part = ARGV[1] ? ARGV[1] : '1'
+
+require './puzzles/%s_%s/main.rb' % [puzzle, part]
+
+f = File.open('./puzzles/%s_%s/input.txt' % [puzzle, part], 'r')
+
+res = run f
+puts "Result: " + res.to_s
+
+f.close