30 lines
652 B
Ruby
30 lines
652 B
Ruby
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#prepare the input which is a string containing new lines
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def parse(input)
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data = []
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input.each_line do |line|
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winners, draw = line.split(":").last.split("|")
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winners =winners.split(" ").map {|entry| entry.strip.to_i }
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draw = draw.split(" ").map {|entry| entry.strip.to_i }
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data << [winners,draw]
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end
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data
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end
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# result should a single string or integer
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def calculate(data)
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cards = []
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data.length.times.each do |i|
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cards << 1
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end
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data.each_with_index do |d,i|
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winners, draw = d
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matches = (winners & draw).length
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matches.times do |j|
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cards[i+j+1] += cards[i]
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end
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end
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cards.reduce(&:+)
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end
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