Hey, do you want to view all the possible arrangement of the letters of a word, then try this.

 

#   file   : wordperm.rb

#   Author : Selasie Agbavor <volsbit@gmail.com>

#   Date   : May, 16 2008

#   Time   : 14:20:00 G.M.T

 
class String

   def shuffle

       self.split(//).sort_by{rand}.to_s

   end

end
class Integer

    def fact

        if self.zero?
            1
        else
            self * (self-1).fact
        end
    end

end
word = gets.chomp

array_of_letters = word.split(//)

hash = Hash.new(0)
array_of_letters.each{ |lett|

    hash[lett] += 1

}

counts_greater_than_one = []

hash.each_value{ |val|

    counts_greater_than_one << val if val > 1

}

if !counts_greater_than_one.empty?

    product = 1
    counts_greater_than_one.each{ |num|

        product *= num.fact

    }

    permutation = word.size.fact / product
   
else

    permutation = word.size.fact
   
end

 

already_shuffled_words = []
count = 0

while count < permutation

    shuffled_word = word.shuffle

    if !already_shuffled_words.include? shuffled_word

        puts shuffled_word
        #sleep 1  # optional
        already_shuffled_words << shuffled_word
        count += 1

    end

end

puts “\n”

puts “#{word} can be arranged #{permutation} ways taking all characters”