8 lines
258 B
Ruby
8 lines
258 B
Ruby
r2 = 10*10..15*15
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range = (-15..15).to_a
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points = range.product(range).select {|i,j| r2.cover?(i*i + j*j)}
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puts "Precalculate: #{points.size}"
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pt = Hash.new(" ")
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points.sample(100).each{|ij| pt[ij] = " o"}
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puts range.map{|i| range.map{|j| pt[[i,j]]}.join}
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