How to Ace Graph Traversal Questions on Your Exam

Let's be brutally honest: Graph Traversal is usually taught terribly in textbooks. You don't need to be a genius to master this; you just need to understand one specific mental model.

The 3-Step Exam Strategy

1. Isolate: Extract the exact variables from the prompt.
2. Anticipate the Trap: The professor is betting you will end up forgetting to mark nodes as 'visited'. Know this before you write your first line.
3. Execute: Follow the algorithm. For instance: In a Depth-First Search on a cyclic graph, if you don't keep a 'visited' set, your code will bounce between nodes in an infinite loop..

If you get stuck, do not burn 15 minutes staring at it. Write down the formula, get partial credit, and move on.

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