OpenAIVerified interview challenge
Build an IPv4 address iterator
Extend an address iterator through forward traversal, reverse traversal and subnet boundaries.
Unlock with Full AccessThe challenge
Build one iterator across successive parts rather than starting again for each requirement. Later parts add reverse movement and CIDR limits, followed by a written optimisation discussion. The exercise tests address representation and boundary behaviour as well as your ability to explain the implementation.
What you'll practise
Address boundaries
Keep traversal correct across octets and the permitted address range.
Implementation reasoning
Explain the efficiency of the iterator after the coding parts.
Current partFurther parts unlock as you progress
solution.pyPython 3.13
# Build on your implementation
# Run checks for the current part
# Full starter code includedCurrent-part checks
Run your code to see results.
The complete sequence, starter code and checks are included with Full Access.