From aca1f4d76bae221b1207292029f57f01b2cf7035 Mon Sep 17 00:00:00 2001
From: Tudor Pavel <tudorv.pavel@gmail.com>
Date: Mon, 28 Oct 2024 19:44:10 +0200
Subject: [PATCH] Year 2021 Day 1

---
 2021/day01.rb           |  7 +++++++
 2021/examples/day01.txt | 10 ++++++++++
 2 files changed, 17 insertions(+)
 create mode 100644 2021/day01.rb
 create mode 100644 2021/examples/day01.txt

diff --git a/2021/day01.rb b/2021/day01.rb
new file mode 100644
index 0000000..966a4b7
--- /dev/null
+++ b/2021/day01.rb
@@ -0,0 +1,7 @@
+measurements = STDIN.read.split("\n").map(&:to_i)
+
+def solve(measurements, size)
+  measurements.each_cons(size).map(&:sum).each_cons(2).count { |a, b| a < b }
+end
+puts solve(measurements, 1)
+puts solve(measurements, 3)
diff --git a/2021/examples/day01.txt b/2021/examples/day01.txt
new file mode 100644
index 0000000..167e291
--- /dev/null
+++ b/2021/examples/day01.txt
@@ -0,0 +1,10 @@
+199
+200
+208
+210
+200
+207
+240
+269
+260
+263