[2023][ruby][6.x]

2023/ruby/day_06.rb

@@ -0,0 +1,15 @@
+times, records = ARGF.readlines(chomp: true).map { _1.scan(/\d+/).map(&:to_i) }
+
+# part one
+p times.zip(records)
+  .map {|time, record|
+    distances = (1...time).map {|hold| (time - hold) * hold }
+    distances.count { _1 > record }
+  }
+  .inject(:*)
+
+# part two
+time = times.join.to_i
+record = records.join.to_i
+distances = (1...time).map {|hold| (time - hold) * hold }
+p distances.count { _1 > record }