Question

Could I get these answered and explained to me? I'm new to system level programming and rather lost on how to answer or think through these. I'll definitely provide a thumbs up to those who can give an explanation along with their answer. Thanks a bunch!

regular Write down the extended 2. expression for following questions. E.g. Socialsecurity number the in format of 999-99-9999. [0-913} [0-9]{2} [0-9]{4} Answer 1) Valid ".edu" (e.g URL beginning with "http://" and ending with ennenennen http://cs.gsu.edu http://gsu.edu 2) Non-positive integers. -3320) (e.g. -0, -1, pathname in /test/try.c) Unix (e.g 3) A valid absolute /home/umahm0od 1, 4) Identifiers character and 8 which be between 1 can with a long, must starting an underscore. The following characters can number or be letters (e.g. 1number _name underscores or or 1_2_3_4_) 5) Phone number the following format: in any of (999)-999-9999. (Note: all of these by 9999999999,999-9999999, formats should be matched singleregular a expression) 6) A String of format (Firstname Lastname any combination of band) e.g (Usman Mahmood and, Khadija Ashraf aa)

Answer 1

regular Write down the extended 2. expression for following questions. E.g. Socialsecurity number the in format of 999-99-9999. [0-913} [0-9]{2} [0-9]{4} Answer 1) Valid ".edu" (e.g URL beginning with "http://" and ending with ennenennen http://cs.gsu.edu http://gsu.edu 2) Non-positive integers. -3320) (e.g. -0, -1, pathname in /test/try.c) Unix (e.g 3) A valid absolute /home/umahm0od 1, 4) Identifiers character and 8 which be between 1 can with a long, must starting an underscore. The following characters can number or be letters (e.g. 1number _name underscores or or 1_2_3_4_) 5) Phone number the following format: in any of (999)-999-9999. (Note: all of these by 9999999999,999-9999999, formats should be matched singleregular a expression) 6) A String of format (Firstname Lastname any combination of band) e.g (Usman Mahmood and, Khadija Ashraf aa)

Answer:

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OR CAa- * 2o wIs for leter Numexal or unde selou 10Eld3)L dPor any Single digt o thaough 9 Lll