== CSC207 Regular Expressions exercise ==

a) Match a string consisting entirely of digits.






b) Match a person's name, for example Harry Potter. The name is assumed to
consist of two words, each starting with a capital letter and consisting
entirely of letters (from the usual alphabet, without accents). There may be
one or more white space characters separating the two parts.







c) Match a string containing two words that are the same. 






d) Match a valid postal code, for example M5R 1E4 (with one space in between).






e) Match a valid postal code with all digits the same, for example M5R 5E5.