When designing an algorithm, ask yourself :
For which cases does the obvious method work?
Then find a new way to tackle the remaining cases!
Find a hamiltonian path through a tournament graph.
Using a more-of-input approach, we claim to have a solution while pretending that the nodes we have processed so far is the entire input instance.
We want to maintain the Loop Invariant by adding a new node and finding a new hamiltonian path through this new input instance (sub-instance).
How to do this? Case Analysis
We established that we have a hamiltonian path through
To get a new solution with added to form a new sub-instance, pretended to be the entire input,
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- Two Pointer
- Proof of Correctness