CSC448
:
Scanning/Parsing: Regular Expression Examples
[18/22]
Build regular expressions for the following examples:
The string "
Dragon
".
The strings "
Alice
" or "
Bob
".
Any non-empty string of digits.
Any string of digits of length exactly 5 characters.
Any non-empty string of digits of length less than or equal to 3 characters.
Simple URLs of the form "
http://fpl.cs.depaul.edu
".
The tokens of your favourite programming language (as long as it is Java).