Convergence using find?
dsc at swcp.com
Wed Apr 7 16:10:35 CDT 2004
On Wednesday, April 7, 2004, at 02:47 PM, Glen Bojsza wrote:
> I was wondering if anyone has suggestions for converging to the
> nearest number ( if the desired number doesn't exist) in a sorted
Get the field. Use 'sort', then do a modified "binary search". The
chunk 'line i' is expensive for long lists, so actually break up the
data in the binary search.
For the modified "binary search" maybe something like this would work:
If there are < 3 lines in your list do something special (I'll leave
that up to you). Otherwise, do this: Get the middle line. If the
target is greater, then the best is in the latter lines including the
middle one. If the target is less, then the best is in the earlier
ones including the middle one.
I don't like the counting lines part; you might be better to keep up
with the line count or switch to arrays. I bet with some thought you
can come up with a way to do only one line counting operation per cycle
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