in reply to Re^3: numeric representation of string
in thread numeric representation of string

If you are to do a full cross-compare of all your emails one against the other, you are looking at an O(N2) (or O(N!) if you're smart about it) process.

Did you forget a word? I'd be interested to see the case where the smart algorithm is O(N!), and the naive one is O(N2).

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Re^5: numeric representation of string
by BrowserUk (Pope) on Aug 16, 2013 at 12:07 UTC

    You're right of course. Too early in the morning and mixing up n + n-1 + n-2 ... with n * n-1 * n-2 ....

    It should be O((N-1)*N/2). Corrected. Thanks.

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