From 86cd48026409ae434f06b4332f8e2a89a00dddc6 Mon Sep 17 00:00:00 2001
From: Alpha Chen <alpha@kejadlen.dev>
Date: Tue, 30 Nov 2021 21:20:37 -0800
Subject: [PATCH] [2021][ruby][01.x]

---
 2021/ruby/.ruby-version | 1 +
 2021/ruby/day_01.rb     | 2 ++
 2 files changed, 3 insertions(+)
 create mode 100644 2021/ruby/.ruby-version
 create mode 100644 2021/ruby/day_01.rb

diff --git a/2021/ruby/.ruby-version b/2021/ruby/.ruby-version
new file mode 100644
index 0000000..00750ed
--- /dev/null
+++ b/2021/ruby/.ruby-version
@@ -0,0 +1 @@
+3
diff --git a/2021/ruby/day_01.rb b/2021/ruby/day_01.rb
new file mode 100644
index 0000000..0448081
--- /dev/null
+++ b/2021/ruby/day_01.rb
@@ -0,0 +1,2 @@
+p ARGF.read.split("\n").map(&:to_i).each_cons(2).count {|x,y| x < y }
+p ARGF.read.split("\n").map(&:to_i).each_cons(3).map(&:sum).each_cons(2).count {|x,y| x < y }