regex - Regular expression for numeric range -

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looking regular expression cover number range. more specifically, consider numeric format:

nn-nn

where n number. examples are: 

04-11 07-12 06-06

i want able specify range. example, between:

01-27 , 02-03

when range, if - not there. range: range 01-27 02-03

would cover: 01-28, 01-29, 01-30, 01-31 , 02-01

i want regular expression can plug in values range easily. ideas?

validating dates not regexes strengths are.

for example, how validate february regarding leap years.

the solution use available date api's in language


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