From: Milo Thurston <nospam@...>
Date: 2004-10-07T21:19:46+09:00
Subject: Index of multiple similar strings

I'm trying to read through a file like this:
http://www.genomics.ceh.ac.uk/~milo/example.html
In order to count the number of N tracts and locate their
positions. My code goes like this:

dust_seq = # file in url above
nums = 0
d.dust_seq.scan(/[N]+/) do |blah|
	nums += 1
	puts "Index #{d.dust_seq.index(blah.to_s)}"
done
puts "Num of Ns: #{nums}"

In the example, the index for the third of the N groups
is reported as the same as the first, as it's small enough
to fit within it. Is there any way around this?
Thanks.

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