Bogo Sort - Ruby

class Array
    def sorted?
        ### goes thru array and checks if all elements are in order
        for i in 1...self.length
            return false if self[i-1] > self[i]
        end
        return true
    end
    def bogosort
        ### randomly shuffles until sorted
        self.shuffle! until self.sorted?
        return self #return sorted array
    end
end

puts "give me a string"
str = gets.chomp.split('')
puts str.bogosort.join('')