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3 cards from this section. Quick, good the night before a test.
What does a negative edge in a graph signify?
Think about how weights affect paths.
Why is it important to avoid negative cycles?
Consider the impact of looping in paths.
Which algorithm can handle negative edge weights?
Remember which algorithms are designed for certain conditions.
True or False: A negative cycle guarantees a shortest path.
Recap the definition of negative cycles.
Consider a graph with vertices A, B, C, and D where A connects to B with weight 1, B to C with weight -2, and C to D with weight 2. How do the distances from A to all vertices evolve through the Bellman-Ford algorithm?
Iterate through all edges and update distances accordingly.
Design a strange graph where negative cycles appear yet ensure Bellman-Ford can’t find them. What is their impact on path calculations?
Use examples of loops to draw a clear distinction.
5 more questions in this section. Enroll free to practise them all.
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