Here’s a fun little challenge from Kevin Avila:

Write a function that takes an int parameter. When passed a 1, it returns 3. When passed a 3, return 1. 

Now write it again, but avoid any of the approaches you used in the first function

Repeat for as long as you have free time.

I’ve gisted my “went as long as I could before kids coming home from school prevented me from continuing” here.