On 12/01/2011 08:55 AM, Neal Becker wrote:
Gelonida N wrote:
On 11/30/2011 01:32 PM, Neal Becker wrote:
I like to hash a list of words (actually, the command line args of my
program) in such a way that different words will create different hash, but
not sensitive
to the order of the words. Any ideas?
Do youmean hash like digest like md5sum / sha1 ?
You should sort the words alphabetically, concatenate them with a space
or any character, that will NEVER be part of a word and calulate the hash.
If words can exist multiple times, then youhad tu uniqufy them (u using
a python dict / set) first.
Yes that sounds just like what I wanted - thanks!
"different words will create different hash, but not sensitive to the order of the
words"
Just note that you can only say that "probably create" a different
hash. If the hash number is constrained in size (eg. 32 bits), then a
collision is possible. (Unless of course you also constrain the
alphabet and/or length of the words involved)
--
DaveA
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