13 lines
361 B
Ruby
13 lines
361 B
Ruby
require "prime"
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def prime_conspiracy(m)
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conspiracy = Hash.new(0)
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Prime.take(m).map{|n| n%10}.each_cons(2){|a,b| conspiracy[[a,b]] += 1}
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puts "#{m} first primes. Transitions prime % 10 → next-prime % 10."
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conspiracy.sort.each do |(a,b),v|
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puts "%d → %d count:%10d frequency:%7.4f %" % [a, b, v, 100.0*v/m]
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end
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end
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prime_conspiracy(1_000_000)
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