The problem you are having is that hashes are not kept in any particular order. It was lucky that you happened to get values out of the hash in the alphabetical order file #1. But, because of the nature of hash tables, this is quite often not true.

To fix your problem you can use a foreach my $k (sort keys %GRAMMAR) instead of your while loop assuming you want alphabetical order.

In reply to Re: problem with hash keys by wog
in thread problem with hash keys by june_bo

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