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Challenge Notebook¶

Problem: Implement foo(val), which returns val¶

• Constraints
• Test Cases
• Algorithm
• Code
• Unit Test
• Solution Notebook

Constraints¶

• Does foo do anything else?
  • No

Test Cases¶

• foo(val) -> val

Algorithm¶

Refer to the Solution Notebook. If you are stuck and need a hint, the solution notebook's algorithm discussion might be a good place to start.

Code¶

Unit Test¶

The following unit test is expected to fail until you solve the challenge.

Solution Notebook¶

Review the Solution Notebook for a discussion on algorithms and code solutions.