Hi,
I have two data sets, set A and set B of numberical identifiers. B is a subset of A. Set A is about 20,000 lines and set B is a bit less. What I need to do is find all the identifiers in A that are not in B. The second part of this problem is that the identifiers of B are not the same in A, however the B identifier is embedded within the A identifier. So if the identifier for B is 234 the identifier for A is probably something like 000234000.
Solving the problem with sorting doesn't help much because I have to review about 20,000 lines.
Any ideas are appreciated.
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