1 Directed Depth First Search Adjacency Lists A: F G B: A H C: A D D: C F E: C D G F: E: G: : H: B: I: H: F A B C G D E H I.

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Presentation transcript:

1 Directed Depth First Search Adjacency Lists A: F G B: A H C: A D D: C F E: C D G F: E: G: : H: B: I: H: F A B C G D E H I

2 Directed Depth First Search F A B C G D E H I dfs(A) A-F A-G Function call stack:

3 Directed Depth First Search F A B C G D E H I dfs(A) A-F A-G Function call stack: visit(F) F-E

4 Directed Depth First Search F A B C G D E H I dfs(A) A-F A-G Function call stack: dfs(F) F-E dfs(E) E-C E-D E-G

5 Directed Depth First Search F A B C G D E H I dfs(A) A-F A-G Function call stack: dfs(F) F-E dfs(E) E-C E-D E-G dfs(C) C-A C-D

6 Directed Depth First Search F A B C G D E H I dfs(A) A-F A-G Function call stack: dfs(F) F-E dfs(E) E-C E-D E-G dfs(C) C-A C-D

7 Directed Depth First Search F A B C G D E H I dfs(A) A-F A-G Function call stack: dfs(F) F-E dfs(E) E-C E-D E-G dfs(C) C-A C-D dfs(D) D-C D-F

8 Directed Depth First Search F A B C G D E H I dfs(A) A-F A-G Function call stack: dfs(F) F-E dfs(E) E-C E-D E-G dfs(C) C-A C-D dfs(D) D-C D-F

9 Directed Depth First Search F A B C G D E H I dfs(A) A-F A-G Function call stack: dfs(F) F-E dfs(E) E-C E-D E-G dfs(C) C-A C-D dfs(D) D-C D-F

10 Directed Depth First Search F A B C G D E H I dfs(A) A-F A-G Function call stack: dfs(F) F-E dfs(E) E-C E-D E-G dfs(C) C-A C-D

11 Directed Depth First Search F A B C G D E H I dfs(A) A-F A-G Function call stack: dfs(F) F-E dfs(E) E-C E-D E-G

12 Directed Depth First Search F A B C G D E H I dfs(A) A-F A-G Function call stack: dfs(F) F-E dfs(E) E-C E-D E-G

13 Directed Depth First Search F A B C G D E H I dfs(A) A-F A-G Function call stack: dfs(F) F-E dfs(E) E-C E-D E-G dfs(G)

14 Directed Depth First Search F A B C G D E H I dfs(A) A-F A-G Function call stack: dfs(F) F-E dfs(E) E-C E-D E-G

15 Directed Depth First Search F A B C G D E H I dfs(A) A-F A-G Function call stack: dfs(F) F-E

16 Directed Depth First Search F A B C G D E H I dfs(A) A-F A-G Function call stack:

17 Directed Depth First Search F A B C G D E H I dfs(A) A-F A-G Function call stack:

18 Directed Depth First Search F A B C G D E H I Nodes reachable from A: A, C, D, E, F, G