Practice Understanding Bfs And Dfs In Cycle Detection (22.4)

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9 questions

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6 sample questions

Question 1.
Define a cycle in a graph.
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Think about returning to the same point without retracing edges.
Question 2.
What does DFS stand for?
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It's a common graph traversal algorithm.
3Question 3.
What is a cycle in graph theory?
- A path that starts and ends at different vertices
- A path that starts and ends at the same vertex
- A connection between two vertices
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Consider paths in a circle.
4Question 4.
Does a back edge in a directed graph always indicate a cycle?
- True
- False
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What does a back edge connect to?
Question 5.
You are given a directed graph. Explain why the presence of a back edge indicates a cycle. Provide an example.
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Sketch the graph to visualize the back edge.
Question 6.
Create a simple undirected graph and explain how you would use DFS to check for cycles.
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Focus on marking visited nodes and avoiding the parent node.

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