From: Albert Schlef <lists@...>
Date: 2013-06-09T21:10:47+09:00
Subject: Re: How do I write a method, which returns whether the letters in a word occur in alphabetical order

Albert Schlef wrote in post #1111786:
> Tario C. wrote in post #1111683:
>> How do I write a method, which returns whether the letters in a word
>> occur in alphabetical order?
>
> Tip: you can use recursion -- check only the first two characters of the
> string, then ask your function to check the rest.
>
> (It won't really be efficient in Ruby, because strings aren't lists, but
> it'd be cute. (On the other hand, splicing a string in Ruby perhaps uses
> copy-on-write so it may not be inefficient.))

Well, let me "correct" myself, just for the record: even if splicing a
string copies their content unconditionally, it wouldn't be horrible
since (1) our code is intended for "word"s, which are relatively short;
and (2) this is a scripting language and the copying, done in C, is
negligible.

BTW (and sorry if it's somewhat off-topic), Bjarne Stroustrup favors 
vectors
over linked lists: http://www.youtube.com/watch?v=YQs6IC-vgmo

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