Outline for February 4

Reading: text, §10
Due: Homework 2, due on February 4 at 11:55pm — note extension

1. List example [addup.py]
2. Thinking recursively [recfun.py]
   1. First: think of the recursive case (write the problem in terms of something involving a smaller instance of the problem)
   2. Next: think of base case (when to stop)
   3. Example: Find the length of a string
   4. Example: Does the string only have alphabetic characters in it?
   5. Example: Find the maximum element of a list
   6. Example: Construct a string from a list of strings
   7. Example: Reverse a string

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