I have 2 columns of data. Both should ultimately have identical data,
but both have extranious data I need to separate. These lists will be
300+ long, so by hand is taking forever. Example:
Column A Column B
12345 12344
12346 12345
12347 12346
12348 12347
12349 12349

I need a way to extract the 12344 from column B since it is not in A,
and 12348 from A since it is not in B. They do not have the same number
of entries. Any ideas? Thanks sooooo much in advance!