hority hority
hority
/ sosutwit.rb
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December 21, 2015 00:08
— forked from sasamijp/sosutwit.rb
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| # -*- encoding: utf-8 -*- | |
| require 'rubygems' | |
| require 'twitter' | |
| class Integer | |
| def prime? | |
| n = self.abs() | |
| return true if n == 2 | |
| return false if n == 1 || n & 1 == 0 | |
| d = n-1 |