Rollback to before the attempted batch processing. Time for a major rework.
Added valid_input? method to verify input matches the integer,integer format
Now pulling one line a time from ARGF. Input changes to most other methods to take into account a single line input instead of an array
Waiting to do the count until all data is known is too slow. Removed get_count method and now just perform the count while extracting the age
Modify test data creation script to randomly add bad data, and integers with leading zeroes.