Sha256: 48d01c483b315107cb597f41a590d2061c9c00138bca0cf684008f625db3aa77
Contents?: true
Size: 312 Bytes
Versions: 20
Compression:
Stored size: 312 Bytes
Contents
# coding: utf-8
class Integer
def happy?
return false unless self > 0
n = self
sad = '4 16 37 58 89 145 42 20'
seq = ""
loop do
n = n.digits.map{|d| d ** 2}.reduce(:+)
seq << n.to_s << ' '
return true if n == 1
return false if seq.include? sad
end
end
end
Version data entries
20 entries across 20 versions & 1 rubygems