Understanding Depth-First Search Algorithm

Jan 01, 2025

40 likes | 58 Views

Learn how Depth-First Search explores tree branches systematically, efficiently, and in a particular order for problem-solving. Follow this guide to master its implementation and applications.

Share Presentation

Embed Code

hada

Download Presentation

Understanding Depth-First Search Algorithm

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

Depth-first search

COMP171 Fall 2005. Depth-first search . Depth-First Search (DFS). DFS is another popular graph search strategy Idea is similar to pre-order traversal (visit children first) DFS can provide certain information about the graph that BFS cannot

940 views • 27 slides

Depth-First Search

A. B. D. E. C. Depth-First Search. Outline and Reading. Definitions ( § 6.1) Subgraph Connectivity Spanning trees and forests Depth-first search ( § 6.3.1) Algorithm Example Properties Analysis Applications of DFS ( § 6.5) Path finding Cycle finding. Subgraphs.

669 views • 15 slides

Depth-First Search

G is completely traversed before exploring G and G . 1. 2. 3. Depth-First Search. Idea : Keep going forward as long as there are unseen nodes to be visited. Backtrack when stuck. v. G. 3. G. G. 2. 1. From Computer Algorithms by S. Baase and A. van Gelder.

857 views • 17 slides

Breadth-First Searches

Breadth-First Searches. Introduction to AI. Breadth-First Search. Using a breadth-first strategy we expand the root level first and then we expand all those nodes (i.e. those at level 1) before we expand any nodes at level 2.

349 views • 4 slides

Depth-First Search

Depth-First Search. A digital black-and-white image (or any other two color image) may be represented by an array of 0s and 1s, each entry denoting a pixel’s state (e.g., 0 for white, 1 for black) Example: very low resolution image of two balls Array representation:. Depth-First Search.

422 views • 30 slides

Depth First Search

CS 146 Lecture 9. Depth First Search. Prof. S M Lee Department of Computer Science. '' Nothing in life is to be feared. It is only to be understood.'' - Marie Curie. Games. Problem: a position in a Chess/Go/ … game Solution: a strategy to guarantee winning game

365 views • 24 slides

Depth First Search

Depth First Search. Output List:. 1. 2. 4. 3. 7. 6. 10. 13. 9. 11. 8. 5. 15. 14. 12. Backtrack to 10,6,7 9, 11, 8, 5 Stop at 5 Backtrack to 8,11 15,14,12 STOP – All nodes are marked!!. Start with 1 2,4,3 Stop at 3 Backtrack to 4, can we search? 7,6 Stop at 2

404 views • 14 slides

Breadth-First Searches

Breadth-First Searches. G5AIAI – Introduction to AI. Breadth-First Search. Using a breadth-first strategy we expand the root level first and then we expand all those nodes (i.e. those at level 1) before we expand any nodes at level 2.

142 views • 4 slides

Depth First Search

Depth First Search. open site. dfs(0, 0). blocked site. reachable from top via open sites. 0. 1. 2. 3. 4. 0. 1. 2. 3. 4. Depth First Search. open site. dfs(0, 0). blocked site. reachable from top via open sites. 0. 1. 2. 3. 4.

776 views • 67 slides

Depth-First Search Algorithm

b. d. a. c. d. d. a. b. b. e. a. ·. ·. ·. ·. ·. ·. ·. ·. ·. ·. ·. a. a. e. d. b. c. Depth-First Search Algorithm. dfs ( a ) a .marked  1 print a for each ( a , u)  E if (u.mark != 1) dfs (u). dfs(“a”). a. ·. b. ·. c. ·. d. ·.

731 views • 45 slides

Depth First Search

Depth First Search. 1. 2. 3. 4. 5. 1. Step 1. 2. 3. 4. 5. 1. Step 2. 2. 3. 4. 5. 1. Step 3. 2. 3. 4. 5.

189 views • 5 slides

Depth-First Search

G is completely traversed before exploring G and G. 1. 2. 3. Depth-First Search. Idea : Keep going forward as long as there are unseen nodes to be visited. Backtrack when stuck. v. G. 3. G. G. 2. 1. From Computer Algorithms by S. Baase and A. van Gelder.

376 views • 17 slides

Depth-First Search

Depth-First Search. Idea: Starting at a node, follow a path all the way until you cannot move any further Then backtrack and try another branch Do this until all nodes have been visited Similar to finding a route in a maze. DFS - Example. DFS(a) tree. f. b. b. b. f. f. a. a. a. a.

453 views • 13 slides

Depth-First Search

COMP171 Fall 2006. Depth-First Search. Lecture 24. Depth-First Search (DFS). DFS is another popular graph search strategy Idea is similar to pre-order traversal (visit node, then visit children recursively) DFS can provide certain information about the graph that BFS cannot

441 views • 27 slides

Depth-first search

Depth-first search. Depth-First Search (DFS). DFS is another popular graph search strategy Idea is similar to pre-order traversal (visit children first) DFS can provide certain information about the graph that BFS cannot It can tell whether we have encountered a cycle or not. DFS Algorithm.

628 views • 27 slides

Depth-First Searches

Depth-First Searches. Introduction to AI. Depth-First Search. Depth first search explores one branch of a tree before it starts to explore another branch. It can be implemented by adding newly expanded nodes at the front of the queue.

57 views • 4 slides

Depth First Search

Depth First Search. Instructor : Prof. Jyh-Shing Roger Jang Designer ： Shao-Huan Wang The ideas are reference to the textbook “Fundamentals of Data Structures in C “. Depth First Search. void dfs(int v){ node_pointer w; visited[v] = TURE; printf(“%5d”, v);

192 views • 12 slides

Breadth-First Searches

55 views • 4 slides

More Related