search.rb

#!/usr/bin/ruby
pages = Array.new
queries = Array.new
puts "Enter the input. Hit ctrl + D when done!"
ARGF.each do |line|
	if line[0].downcase == 'p'
		pages << line.downcase
	elsif line[0].downcase == 'q'
		queries << line.downcase
	else next
	end
end
for query in queries
	search_terms = query.split
	search_terms.shift
	result_array = Array.new
	print "Q" + (queries.index(query) + 1).to_s + " : "
	for page in pages			
		weight = 0
		keywords = page.split
		keywords.shift
		list = search_terms & keywords
		for a_key in list
			weight =  weight + ((8 - keywords.index(a_key)) * (8 - search_terms.index(a_key)))
		end
		result_array << weight
		hash = Hash.new
		i = 1
		result_array.each do |value|
			hash["P" + i.to_s] = value
			i += 1
		end
	end
  result_hash =  Hash[hash.sort_by{|k,v| [-v, k]}]
	i = 0
	result_hash.each do |key, value|
		if value != 0 and i < 5
			print key + " "
			i += 1
		end
	end
	print "\n"
end