Course Title: Theory of Computation

Write regular expression for 24-hour clock system. The format is [hh]:[mm]. [hh] refers to a zero-padded hour between 00 and 24 (where 24 is only used to denote midnight at the end of a calendar day). [mm] refers to a zero-padded minute between 00 and 59. Example of some valid times: 00:00, 00:01, ... 00:59, ... 11:23, ... 21:44, ... 23:59