The Line on Recursion

Recall the two parts of a recursive solution:

1. If the problem is easy, solve it immediately.
2. If the problem can't be solved immediately, divide it into smaller problems, then:
   • Solve the smaller problems.

In terms of the "divide a line into 16 pieces" problem these are:

1. If a line is small enough, don't divide it.
2. Divide the line into two pieces.
   • Apply this process to each of the two pieces.