[2021][ruby][01.x]

2021/ruby/.ruby-version

@@ -0,0 +1 @@
+3

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 }