FsDevNinja

#...
gem 'devise'
gem 'omniauth-twitter'
gem 'omniauth-facebook'
gem "omniauth-google-oauth2"
gem "figaro"
#...

FsDevNinja

class String
  def rot13
    self.tr!("A-Za-z", "N-ZA-Mn-za-m")
    self
  end
end

FsDevNinja

module Factorial
  
  def self.of(number)
    return nil if number == nil
    arr = []
    (1..number).each do |n|
      arr << n
    end
    arr.inject(:*)
  end

FsDevNinja

module Uniques
  
  def self.cleanup(array)
    arr = Hash.new(0)
    array.reject{ |item| (arr[item] += 1) > 1 }
  end
  
end

FsDevNinja

class LargestPrimeFactor
  def largest_prime_of(number)
    return nil if number == nil
    arr = []
    (2..number).each do |n|
      if prime?(n)
        arr << n
      end
    end
    arr.reject!{|n| number % n != 0}

FsDevNinja

module StringReverser
  def self.reverse(input)
    return nil if input == nil
    output = []
    input.split("").each_with_index do |n,i|
      output << input[-i-1]
    end
    output.join("").to_s
  end  
end

FsDevNinja

RSpec.describe Stack do
  
  before :each do
    @node3 = Node.new(57, nil)
    @node2 = Node.new(21, @node3)
    @node1 = Node.new(34, @node2)
    @stack = Stack.new
  end
  describe "initialize a stack" do
    it "stack.top should eq nil" do