Practice DFS Numbering Technique - 21.1.5 | 21. Depth First Search (DFS) | Design & Analysis of Algorithms - Vol 1
K12 Students

Academics

AI-Powered learning for Grades 8–12, aligned with major Indian and international curricula.

Professionals

Professional Courses

Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.

Games

Interactive Games

Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What does DFS stand for?

💡 Hint: Think about different types of search strategies in graph theory.

Question 2

Easy

What is a pre-number in the context of DFS?

💡 Hint: Recall the sequence of actions taken when visiting a vertex.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What does DFS stand for?

  • Depth First Search
  • Depth First State
  • Depth Search First

💡 Hint: Remember the traversal style it represents.

Question 2

True or False: Pre numbers assigned in DFS indicate the exit time of a vertex.

  • True
  • False

💡 Hint: Consider the definitions of pre versus post numbers.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Given a directed graph, perform a DFS starting from vertex A and describe the changes in pre and post numbering.

💡 Hint: Make sure to carefully track when you enter and exit each vertex.

Question 2

Analyze a graph with cycles using DFS. How do the pre and post numbers reveal the presence of cycles?

💡 Hint: Look carefully at how your exit times relate to your entry times for detecting cycles.

Challenge and get performance evaluation