Sha256: a4db7059aed5bb6e163797c4b92bf461175552a5580347560390018af81bcab7
Contents?: true
Size: 298 Bytes
Versions: 16
Compression:
Stored size: 298 Bytes
Contents
# coding: utf-8
class Integer
def perfect?
return false if self < 6 or self.odd? or self.to_s !~ /(6|8)$/
return false if self != 6 and digital_root != 1
divisors = proper_positive_divisors
return false unless (divisors.size + 1).even?
divisors.reduce(:+) == self
end
end
Version data entries
16 entries across 16 versions & 1 rubygems