On 5/12/2012 5:17 AM Jean-Daniel said...
Hello,
I have a long list of n date intervals that gets added or suppressed
intervals regularly. I am looking for a fast way to find the intervals
containing a given date, without having to check all intervals (less
than O(n)).
ISTM the fastest way is to retrieve the list of intervals from a dict
using the date as a key. You don't say how long your list of intervals
is, nor how large each interval can be so I don't have enough info to
determine the setup reqs, but I'd suspect that a list of tens of
thousands of intervals covering ranges of days to weeks would be doable.
If instead you're talking about millions of ranges covering years to
decades I'd start elsewhere.
Emile
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