module KiribanGetter
Constants
- VERSION
Public Instance Methods
digit()
click to toggle source
# File lib/kiriban_getter.rb, line 26 def digit Math.log10(self.abs).to_i + 1 rescue FloatDomainError # Math.log10(0).to_i # #=> FloatDomainError: -Infinity 1 end
kiriban?()
click to toggle source
# File lib/kiriban_getter.rb, line 34 def kiriban? kuraiban? || zorome? end
kuraiban?()
click to toggle source
# File lib/kiriban_getter.rb, line 5 def kuraiban? num = self.abs return false if num < 10 i = 10 ** (digit - 1) num % i == 0 end
zorome?()
click to toggle source
# File lib/kiriban_getter.rb, line 14 def zorome? num = self.abs return false if num < 10 # generate number which all digit is 1 zorome1 = digit.times.inject(0) { |n| n * 10 + 1 } num % zorome1 == 0 end