Sha256: e63944c76206036514d01632f12f5b370bc1c5206a1d8d02665776f0512ce280
Contents?: true
Size: 360 Bytes
Versions: 36
Compression:
Stored size: 360 Bytes
Contents
# coding: utf-8
class Integer
# A factorion is a number equal to the sum of the factorials of its decimal
# digits.
#
# Returns true if self is a factorion; false otherwise.
#
# 145.factorion? #=> true
# 40585.factorion? #=> true
# 200.factorion? #=> false
#
def factorion?
[1, 2, 145, 40585].include? self
end
end
Version data entries
36 entries across 36 versions & 1 rubygems