00:00 Logical thinking
03:45 Testing
10:11 Using an array as the parameter
11:49 Looping over the array
13:22 Three is a magic number: use array length
14:58 Understanding the correctness of loops
17:24 Invariants
18:22 Exceptions and debugging
19:56 Zero is a magic number: throw an exception
22:41 Testing exceptions
