CIS 41A Unit J, Exercise J

This assignment consists of one text file.

At the top of your file, put the following multi-line comment with your information:

'''
Your name as registered, with optional nickname in parentheses
CIS 41A   Fall 2021
Unit J, Exercise J
'''

In this exercise we will be working with regular expressions that can be used to match something in a string.
In the subsequent Problem J, we will write Python code that uses regular expressions in functions imported from the re module .

1. Write Regular Expressions that match:

   1. zero or more A
   2. one or more A
   3. zero or one A
   4. two or three A

2. What do these Regular Expressions match?

   1. AB{3}
   2. (AB){3}

3. Given the following regular expression: [^A-G] which of the following strings contain a match for this regular expression

   1. A
   2. AB
   3. ADBC
   4. D

4. Write a regular expression that matches a string containing exactly three characters.

Submit your finished text file in Canvas, Exercise J.