Day 1 in ruby

[ou-summer-of-code-2017.git] / 01-ticket-prices / day1.rb

diff --git a/01-ticket-prices/day1.rb b/01-ticket-prices/day1.rb
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+
+$destination_values = {'Almaty' => 2.0, 'Brorfelde' => 0.9, 'Estacada' => 0.4, 
+  'Jayuya' => 0.6, 'Karlukovo' => 2.2, 'Morgantown' => 2.9,'Nordkapp' => 1.5, 
+  'Nullarbor' => 2.2, 'Puente-Laguna-Garzonkuala-Penyu' => 0.4, 'Uzupis' => 0.9}
+$destination_values.default = 1.0
+
+holidays = File.readlines('01-holidays.txt').map {|l| l.chomp.split}
+
+def affordable_holidays(hs)
+  hs.select {|h| h[1].to_i <= 1200}
+end
+
+def value(holiday)
+  $destination_values[holiday[2]] * holiday[3].to_f / holiday[1].to_i 
+end
+
+part1 = affordable_holidays(holidays).length
+part2 = affordable_holidays(holidays).max_by {|h| value h}[0]
+
+puts "Part 1: #{part1}\nPart 2: #{part2}"