PatrickTulskie (owner)

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gist: 111514 Download_button fork
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class Array
  
  def antiuniq
    
    duplicates = []
    clone = [] + self
    
    while clone.length > 0
      item = clone.pop
      duplicates.push(item) if clone.include?(item) || duplicates.include?(item)
    end
  
    return duplicates
  end
  
  def antiuniq!
    self.replace antiuniq
  end
  
end