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@ -10,6 +10,7 @@ foods = ARGF.read
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}
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all_ingredients = foods.map(&:ingredients).inject(&:|)
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all_allergens = foods.map(&:allergens).inject(&:|)
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no_allergens = all_ingredients.select {|ingredient|
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possible_allergens = foods
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@ -22,5 +23,17 @@ no_allergens = all_ingredients.select {|ingredient|
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}
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}
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p foods.map {|f| f.ingredients.count {|i| no_allergens.include?(i) }}.sum
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# part one
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# p foods.map {|f| f.ingredients.count {|i| no_allergens.include?(i) }}.sum
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known, unknown = all_allergens.map {|a|
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[a, foods.select {|f| f.allergens.include?(a) }.map(&:ingredients).inject(&:&) ]
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}.to_h.partition {|_,v| v.size == 1 }.map(&:to_h)
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until unknown.empty?
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unknown.transform_values! {|v| v - known.values.inject(&:|) }
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new_known, unknown = unknown.partition {|_,v| v.size == 1 }.map(&:to_h)
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known.merge!(new_known)
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end
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p known.transform_values {|v| v.to_a.first }.sort_by(&:first).map(&:last).join(?,)
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