Practice Dfs Numbering Technique (21.1.5) - Depth First Search (DFS) - Design & Analysis of Algorithms

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9 questions

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6 sample questions

Question 1.
What does DFS stand for?
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Think about different types of search strategies in graph theory.
Question 2.
What is a pre-number in the context of DFS?
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Recall the sequence of actions taken when visiting a vertex.
3Question 3.
What does DFS stand for?
- Depth First Search
- Depth First State
- Depth Search First
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Remember the traversal style it represents.
4Question 4.
True or False: Pre numbers assigned in DFS indicate the exit time of a vertex.
- True
- False
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Consider the definitions of pre versus post numbers.
Question 5.
Given a directed graph, perform a DFS starting from vertex A and describe the changes in pre and post numbering.
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Make sure to carefully track when you enter and exit each vertex.
Question 6.
Analyze a graph with cycles using DFS. How do the pre and post numbers reveal the presence of cycles?
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Look carefully at how your exit times relate to your entry times for detecting cycles.

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