solution1

solution1.rb

@@ -0,0 +1,39 @@
+require 'csv'
+
+CSV::Converters[:range] = ->(s) { 
+  begin 
+    Range.new(*s.split('-').map(&:to_i))
+  rescue ArgumentError
+    s
+  end
+}
+
+CSV::Converters[:strip] = ->(s) { s&.strip }
+
+PARTNERS = CSV.parse(File.read("partners.csv"), converters: [:integer, :range, :strip], headers: true)
+THEATRE = "Theatre"
+SIZE_SLAB =  "Size Slab (in GB)"
+MIN_COST = "Minimum cost"
+COST_PER_GB = "Cost Per GB"
+PARTNER_ID = "Partner ID"
+
+
+DELIVERIES = CSV.parse(File.read("input.csv"), converters: [:numeric, :strip])
+
+result = []
+
+DELIVERIES.each do |delivery|
+	result << [delivery[0], false, '', '' ]
+
+	PARTNERS.each do |partner|
+		next if partner[THEATRE] != delivery[2]
+		next unless partner[SIZE_SLAB].include?(delivery[1])
+
+    price = [delivery[1] * partner[COST_PER_GB], partner[MIN_COST]].max
+	  result[-1] = [delivery[0], true, partner[PARTNER_ID], price] if result[-1][-1].is_a?(String) || price < result[-1][-1]
+	end
+end
+
+CSV.open("output1.csv", "w") do |csv|
+  result.each {|r| csv << r}
+end