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Breadth First Search. -. C. D. A. B. E. F. G. H. I. front. FIFO Queue. Breadth First Search. -. C. D. A. B. E. F. G. H. I. enqueue source node. A. front. FIFO Queue. Breadth First Search. -. C. D. A. B. E. F. G. H. I. dequeue next vertex. A. front.

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Breadth first search
Breadth First Search

-

C

D

A

B

E

F

G

H

I

front

FIFO Queue


Breadth first search1
Breadth First Search

-

C

D

A

B

E

F

G

H

I

enqueue source node

A

front

FIFO Queue


Breadth first search2
Breadth First Search

-

C

D

A

B

E

F

G

H

I

dequeue next vertex

A

front

FIFO Queue


Breadth first search3
Breadth First Search

-

C

D

A

B

E

F

G

H

I

visit neighbors of A

front

FIFO Queue


Breadth first search4
Breadth First Search

-

C

D

A

B

E

F

G

H

I

visit neighbors of A

front

FIFO Queue


Breadth first search5
Breadth First Search

A

-

C

D

A

B

E

F

G

H

I

B discovered

B

front

FIFO Queue


Breadth first search6
Breadth First Search

A

-

C

D

A

B

E

F

G

H

I

visit neighbors of A

B

front

FIFO Queue


Breadth first search7
Breadth First Search

A

-

C

D

A

B

E

F

G

H

I

A

I discovered

B I

front

FIFO Queue


Breadth first search8
Breadth First Search

A

-

C

D

A

B

E

F

G

H

I

A

finished with A

B I

front

FIFO Queue


Breadth first search9
Breadth First Search

A

-

C

D

A

B

E

F

G

H

I

A

dequeue next vertex

B I

front

FIFO Queue


Breadth first search10
Breadth First Search

A

-

C

D

A

B

E

F

G

H

I

A

visit neighbors of B

I

front

FIFO Queue


Breadth first search11
Breadth First Search

A

-

C

D

A

B

E

F

G

H

I

A

visit neighbors of B

I

front

FIFO Queue


Breadth first search12
Breadth First Search

A

-

C

D

A

B

E

F

G

H

B

I

A

F discovered

I F

front

FIFO Queue


Breadth first search13
Breadth First Search

A

-

C

D

A

B

E

F

G

H

B

I

A

visit neighbors of B

I F

front

FIFO Queue


Breadth first search14
Breadth First Search

A

-

C

D

A

B

E

F

G

H

B

I

A

A already discovered

I F

front

FIFO Queue


Breadth first search15
Breadth First Search

A

-

C

D

A

B

E

F

G

H

B

I

A

finished with B

I F

front

FIFO Queue


Breadth first search16
Breadth First Search

A

-

C

D

A

B

E

F

G

H

B

I

A

dequeue next vertex

I F

front

FIFO Queue


Breadth first search17
Breadth First Search

A

-

C

D

A

B

E

F

G

H

B

I

A

visit neighbors of I

F

front

FIFO Queue


Breadth first search18
Breadth First Search

A

-

C

D

A

B

E

F

G

H

B

I

A

visit neighbors of I

F

front

FIFO Queue


Breadth first search19
Breadth First Search

A

-

C

D

A

B

E

F

G

H

B

I

A

A already discovered

F

front

FIFO Queue


Breadth first search20
Breadth First Search

A

-

C

D

A

B

E

F

G

H

B

I

A

visit neighbors of I

F

front

FIFO Queue


Breadth first search21
Breadth First Search

A

-

C

D

A

B

E

F

G

H

I

B

I

A

E discovered

F E

front

FIFO Queue


Breadth first search22
Breadth First Search

A

-

C

D

A

B

E

F

G

H

I

B

I

A

visit neighbors of I

F E

front

FIFO Queue


Breadth first search23
Breadth First Search

A

-

C

D

A

B

E

F

G

H

I

B

I

A

F already discovered

F E

front

FIFO Queue


Breadth first search24
Breadth First Search

A

-

C

D

A

B

E

F

G

H

I

B

I

A

I finished

F E

front

FIFO Queue


Breadth first search25
Breadth First Search

A

-

C

D

A

B

E

F

G

H

I

B

I

A

dequeue next vertex

F E

front

FIFO Queue


Breadth first search26
Breadth First Search

A

-

C

D

A

B

E

F

G

H

I

B

I

A

visit neighbors of F

E

front

FIFO Queue


Breadth first search27
Breadth First Search

A

-

C

D

A

B

E

F

G

H

I

B

F

I

A

G discovered

E G

front

FIFO Queue


Breadth first search28
Breadth First Search

A

-

C

D

A

B

E

F

G

H

I

B

F

I

A

F finished

E G

front

FIFO Queue


Breadth first search29
Breadth First Search

A

-

C

D

A

B

E

F

G

H

I

B

F

I

A

dequeue next vertex

E G

front

FIFO Queue


Breadth first search30
Breadth First Search

A

-

C

D

A

B

E

F

G

H

I

B

F

I

A

visit neighbors of E

G

front

FIFO Queue


Breadth first search31
Breadth First Search

A

-

C

D

A

B

E

F

G

H

I

B

F

I

A

E finished

G

front

FIFO Queue


Breadth first search32
Breadth First Search

A

-

C

D

A

B

E

F

G

H

I

B

F

I

A

dequeue next vertex

G

front

FIFO Queue


Breadth first search33
Breadth First Search

A

-

C

D

A

B

E

F

G

H

I

B

F

I

A

visit neighbors of G

front

FIFO Queue


Breadth first search34
Breadth First Search

G

A

-

C

D

A

B

E

F

G

H

I

B

F

I

A

C discovered

C

front

FIFO Queue


Breadth first search35
Breadth First Search

G

A

-

C

D

A

B

E

F

G

H

I

B

F

I

A

visit neighbors of G

C

front

FIFO Queue


Breadth first search36
Breadth First Search

G

A

-

C

D

A

B

E

F

G

H

I

B

F

G

I

A

H discovered

C H

front

FIFO Queue


Breadth first search37
Breadth First Search

G

A

-

C

D

A

B

E

F

G

H

I

B

F

G

I

A

G finished

C H

front

FIFO Queue


Breadth first search38
Breadth First Search

G

A

-

C

D

A

B

E

F

G

H

I

B

F

G

I

A

dequeue next vertex

C H

front

FIFO Queue


Breadth first search39
Breadth First Search

G

A

-

C

D

A

B

E

F

G

H

I

B

F

G

I

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visit neighbors of C

H

front

FIFO Queue


Breadth first search40
Breadth First Search

G

A

-

C

C

D

A

B

E

F

G

H

I

B

F

G

I

A

D discovered

H D

front

FIFO Queue


Breadth first search41
Breadth First Search

G

A

-

C

C

D

A

B

E

F

G

H

I

B

F

G

I

A

C finished

H D

front

FIFO Queue


Breadth first search42
Breadth First Search

G

A

-

C

C

D

A

B

E

F

G

H

I

B

F

G

I

A

get next vertex

H D

front

FIFO Queue


Breadth first search43
Breadth First Search

G

A

-

C

C

D

A

B

E

F

G

H

I

B

F

G

I

A

visit neighbors of H

D

front

FIFO Queue


Breadth first search44
Breadth First Search

G

A

-

C

C

D

A

B

E

F

G

H

I

B

F

G

I

A

finished H

D

front

FIFO Queue


Breadth first search45
Breadth First Search

G

A

-

C

C

D

A

B

E

F

G

H

I

B

F

G

I

A

dequeue next vertex

D

front

FIFO Queue


Breadth first search46
Breadth First Search

G

A

-

C

C

D

A

B

E

F

G

H

I

B

F

G

I

A

visit neighbors of D

front

FIFO Queue


Breadth first search47
Breadth First Search

G

A

-

C

C

D

A

B

E

F

G

H

I

B

F

G

I

A

D finished

front

FIFO Queue


Breadth first search48
Breadth First Search

G

A

-

C

C

D

A

B

E

F

G

H

I

B

F

G

I

A

dequeue next vertex

front

FIFO Queue


Breadth first search49

G

A

-

C

C

D

A

B

E

F

G

H

I

B

F

G

I

A

Breadth First Search

STOP

front

FIFO Queue


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