Solution for problem 1

qube_challenge.rb

@@ -0,0 +1,53 @@
+require "csv"
+
+class QubeCinema
+
+    # Method to check if delivery is possible or not. If possible then returns the lowest cost and the partner
+    def check_delivery_status
+        # Gets the partner details from csv file
+        partner_details = CSV.read("./partners.csv")
+        processed_partner_details = []
+        final_output = []
+        partner_details.shift
+        partner_details.each do |details|
+            processed_partner_details << {"Theatre"=>details[0].strip, "Details"=>details[1..4].map{|data| data.strip}}
+        end
+        # Gets the delivery details from csv file
+        delivery_details = CSV.read("./input.csv")
+        delivery_details.each do |details|
+            total_data = details[1].to_i
+            theatres = processed_partner_details.select {|data| data["Theatre"] == details[2]}
+            if theatres.count > 0
+                output = []
+                lowest_rate = 0
+                theatres.each do |theatre|
+                    theatre_data = theatre["Details"]
+                    minimum_size, maximum_size = theatre_data[0].split("-").map{|size| size.to_i}
+                    if minimum_size < total_data && total_data < maximum_size
+                        minimum_cost, per_cost = theatre_data[1..2].map(&:to_i)
+                        rate = total_data * per_cost
+                        current_rate = (rate > minimum_cost ? rate : minimum_cost)
+                        if lowest_rate == 0 || lowest_rate > current_rate
+                            lowest_rate = current_rate
+                            output = [details[0].strip, true, theatre_data[3], current_rate]
+                        end
+                    elsif output.length == 0
+                        output = [details[0].strip, false, "", ""]
+                    end
+                end
+                final_output << output if output.length > 0
+            else
+                final_output << [details[0].strip, false, "", ""]
+            end
+        end
+        # Generates the result in a csv file
+        CSV.open("./output.csv", "wb") do |csv|
+            final_output.each do |row|
+                csv << row
+            end
+        end
+    end
+
+end
+
+QubeCinema.new.check_delivery_status