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  1. #!/usr/bin/ruby -w
  2.  
  3.  
  4. class Page
  5. 	@@count = 0
  6. 	attr_reader :id
  7. 	attr_accessor :keywords
  8.  
  9. 	def initialize()
  10. 		@id = @@count + 1
  11. 		@keywords = Hash.new
  12. 		@@count += 1
  13. 	end
  14. end
  15.  
  16.  
  17. class Query
  18. 	@@count = 0
  19. 	attr_reader :id
  20. 	attr_accessor :keywords
  21.  
  22. 	def initialize()
  23. 		@id = @@count + 1
  24. 		@keywords = Hash.new
  25. 		@@count += 1
  26. 	end
  27. end
  28.  
  29.  
  30. class PageStrength
  31. 	attr_reader :pageid
  32. 	attr_accessor :strength
  33. 	def initialize(id, strength)
  34. 		@pageid = id
  35. 		@strength = strength
  36. 	end
  37. end
  38.  
  39.  
  40. class SearchRanking
  41. 	# pages, to contain all page object
  42. 	# queries, to contain all query objects
  43. 	@@pages = []
  44. 	@@queries = []
  45.  
  46. 	def parse
  47. 		# parses the standard input (file in this case)
  48. 		# and builds array of Page and Query objects
  49. 		begin
  50.     		file = File.new("input", "r")
  51.     		while (line = file.gets)
  52.     			if line.start_with?('P')
  53. 					keywords = line.split()
  54. 					# create Page object
  55. 					page = Page.new()
  56. 					keywords.delete(keywords[0])
  57. 					keyword_index_pair = keywords.zip((0...8))
  58. 					keyword_index_pair.each do |keyword, index|
  59. 						page.keywords[keyword.downcase] = 8-index
  60. 					end
  61. 					@@pages.push(page)
  62. 				elsif line.start_with?('Q')
  63. 					keywords = line.split()
  64. 					# create Query object
  65. 					query = Query.new()
  66. 					keywords.delete(keywords[0])
  67. 					keyword_index_pair = keywords.zip((0...8))
  68. 					keyword_index_pair.each do |keyword, index|
  69. 						query.keywords[keyword.downcase] = 8 - index
  70. 					end
  71. 					@@queries.push(query)
  72. 				end
  73.     		end
  74.     		file.close
  75. 		rescue => err
  76.     		puts "Exception: #{err}"
  77.     		err
  78. 		end
  79. 	end
  80.  
  81. 	# def rank_pages:
  82. 	# 	# calculates the strength of each page against each query and
  83. 	# 	# displays the ranking of pages based on decreasing order of strength
  84. 	# 	@@queries.each do |query|
  85. 	# 		page_strengths = []
  86. 	# 		@@pages.each do |page|
  87. 	# 			strength = 0
  88. 	# 			query.keywords.each do |qkey|
  89. 	# 				if page.keywords.has_key?(qkey)
  90. 	# 					strength = strength + query.keywords[qkey]*page.keywords[qkey]
  91. 	# 				end
  92. 	# 			end
  93. 	# 			pstrength = PageStrength.new(page.id, strength)
  94. 	# 			page_strengths.push(pstrength)
  95. 	# 		end
  96. 	# 		# ranking pages: sorting in descending order based on strength value.
  97. 	# 		page_strengths.sort(reverse=True, key=lambda page_strengths: page_strengths.strength)
  98. 	# 		# work on the above ===========******================
  99.  
  100. 	# 	end
  101. 	# end
  102. end
  103.  
  104. sr = SearchRanking.new()
  105. sr.parse()
Success #stdin #stdout #stderr 0.02s 7468KB
comments (?)
stdin 
Standard input is empty
stdout 
Exception: No such file or directory - input
stderr 
prog.rb:72: warning: mismatched indentations at 'end' with 'if' at 52
https://ideone.com/blLRXW
language:
Ruby (ruby 2.5.5)
created:
8 years ago
visibility:
public

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