DFS(G) 1 for each vertex u e G.V 2 u.color = WHITE 3 u.N = NIL 4 time = 0 8. 5 for each vertex u ɛ G. V 6. if u.color == WHITE 9. 10 11 12 7 DFS-Visit (G, u) DFS-VISIT (G,u) 1 time = time +1 // white vertex u has just been discovered u.d = time 3 u.color = GRAY 4 for each v e G.Adj[u] // explore edge (u, v) if v.color == WHITE 6. V.N = u 7 DFS-VISIT(G, v) 8. u.color = BLACK // blacken u; it is finished 9 time = time + 1 10 u.f = time
DFS(G) 1 for each vertex u e G.V 2 u.color = WHITE 3 u.N = NIL 4 time = 0 8. 5 for each vertex u ɛ G. V 6. if u.color == WHITE 9. 10 11 12 7 DFS-Visit (G, u) DFS-VISIT (G,u) 1 time = time +1 // white vertex u has just been discovered u.d = time 3 u.color = GRAY 4 for each v e G.Adj[u] // explore edge (u, v) if v.color == WHITE 6. V.N = u 7 DFS-VISIT(G, v) 8. u.color = BLACK // blacken u; it is finished 9 time = time + 1 10 u.f = time
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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PLEASE SHOW WRITTEN WORK ON PAPER!!! PLEASE HELP

Transcribed Image Text:DFS can be used to find whether there is a cycle in graph or not. Use DFS to check the following
graph
![DFS(G)
1
for each vertex u e G.V
2
u.color = WHITE
4
3
U.N = NIL
4
time = 0
8
for each vertex u e G.V
if u.color == WHITE
10
11
12
7
DFS-VisIT (G, u)
DFS-Visit (G, u)
1
time = time + 1
// white vertex u has just been discovered
2 u.d =
time
3
u.color = GRAY
4
for each v e G. Adj[u]
// explore edge (u, v)
if v.color == WHITE
V.JI = u
7
DFS-VISIT(G, v)
8.
u.color = BLACK
// blacken u; it is finished
9 time = time + 1
10 u.f
= time](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F5fd9638c-a238-48e5-9852-d4989377cdbc%2F69d38a63-ad7b-4884-927d-b3e2aaa26a7a%2Fklypn0g_processed.png&w=3840&q=75)
Transcribed Image Text:DFS(G)
1
for each vertex u e G.V
2
u.color = WHITE
4
3
U.N = NIL
4
time = 0
8
for each vertex u e G.V
if u.color == WHITE
10
11
12
7
DFS-VisIT (G, u)
DFS-Visit (G, u)
1
time = time + 1
// white vertex u has just been discovered
2 u.d =
time
3
u.color = GRAY
4
for each v e G. Adj[u]
// explore edge (u, v)
if v.color == WHITE
V.JI = u
7
DFS-VISIT(G, v)
8.
u.color = BLACK
// blacken u; it is finished
9 time = time + 1
10 u.f
= time
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