[2024][ruby][2.x] refactored
diff --git a/2024/ruby/day_02.rb b/2024/ruby/day_02.rb
index 8fbf6af..d4b34a2 100644
--- a/2024/ruby/day_02.rb
+++ b/2024/ruby/day_02.rb
@@ -1,24 +1,26 @@
-input = DATA.readlines(chomp: true).map { _1.split(/\s+/).map(&:to_i) }
-
-def safe(report)
- deltas = report.each_cons(2).map { _1 - _2 }
- (deltas.all?(&:negative?) || deltas.all?(&:positive?)) && (deltas.all? { (1..3).cover?(_1.abs) })
-end
+Report = Data.define(:levels) do
+ def safe?
+ deltas = levels.each_cons(2).map { _1 - _2 }
+ (deltas.all?(&:negative?) || deltas.all?(&:positive?)) && (deltas.all? { (1..3).cover?(_1.abs) })
+ end
-def dampened(report)
- return enum_for(__method__, report) unless block_given?
+ def dampened
+ return enum_for(__method__) unless block_given?
- (0...report.length).each do |i|
- yield report[0...i] + report[i+1..]
+ (0...levels.length).each do |i|
+ yield Report.new(levels[0...i] + levels[i+1..])
+ end
end
end
-pp input.count {|report|
- # part one
- # safe(report)
+input = DATA.readlines(chomp: true)
+ .map { _1.scan(/\d+/).map(&:to_i) }
+ .map { Report.new(_1) }
+
+# part one
+pp input.count(&:safe?)
- # part two
- safe(report) || dampened(report).any? { safe(_1) }
-}
+# part two
+pp input.count { _1.safe? || _1.dampened.any?(&:safe?) }
__END__