Sha256: 735364a2652283095e7676acabdd861fccf57178412b452e3dda642303fd2ed0
Contents?: true
Size: 277 Bytes
Versions: 6
Compression:
Stored size: 277 Bytes
Contents
class Integer
def goldbach?
return false unless even? and self > 2
#downto(2).any?{|n| n.prime? and (self - n).prime?}
Prime.each do |prime|
next if prime == 2
return true if (self - prime).prime?
return false if prime >= self
end
end
end
Version data entries
6 entries across 6 versions & 1 rubygems