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fast array comparison [message #33162] Sun, 08 December 2002 09:14
Sean Raffuse is currently offline  Sean Raffuse
Messages: 46
Registered: July 2001
Member
Hello.

Let's say I have two arrays.

requested_array = [5,6,7,8,9,10]
available_array = [3,7,8,9,12,13,16]

What is the absolute fastest way to determine the indices of available_array
that contain values in requested_array? The indices need not match. i.e.,
if the two arrays above were used, I would like to return index=[1,2,3]
because the requested values 7, 8 and 9 are in the available array.

Thanks in advance,

Sean Raffuse

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