From: James Edward Gray II <james@...>
Date: 2007-09-13T03:07:06+09:00
Subject: Re: Ruby Quiz Submission [resent in plain text]

On Sep 8, 2007, at 1:59 PM, James Edward Gray II wrote:

> Begin forwarded message:
>
>> # I would appreciate any
>> # comments improving my idiomatic ruby.

Some thoughts�

>>   letters = {}
>>   letters.default = 0

That could be:

   letters = Hash.new(0)

>>   #put letters in a hash
>>   s = sentence.gsub(/[^A-Z]/,'')
>>   s.split('').each do |letter|
>>     letters[letter] = letters[letter] + 1
>>   end

Instead of gsub() and split(), you could use scan().  You can take  
another shortcut here with +=:

   sentence.scan(/[A-Z]/) { |l| letters[l] += 1 }

>>   print i.to_s + "."

We generally favor interpolation in Ruby so we can avoid these  
casting calls:

   print "#{i}."

Great solution though.  Thanks for sending it in.

James Edward Gray II