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1
Breadth First Search
A B
F
I
E H
DC
G
FIFO Queue
-
front
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A
frontenqueue source node
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frontdequeue next vertex
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frontvisit neighbors of A
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BfrontB discovered
- A
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B frontvisit neighbors of A
B
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B I frontI discovered
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B I frontfinished with A
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B I front
dequeue next vertex
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I front
visit neighbors of B
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I F front
F discovered
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A already discovered
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finished with B
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F front
visit neighbors of I
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F E front
E discovered
BI
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F already discovered
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I finished
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E front
visit neighbors of F
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E G front
G discovered
BI F
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F finished
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G front
visit neighbors of E
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E finished
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visit neighbors of G
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Cfront
C discovered
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C Hfront
H discovered
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G finished
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Hfront
visit neighbors of C
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H Dfront
D discovered
C
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C finished
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get next vertex
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Dfront
visit neighbors of H
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finished H
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visit neighbors of D
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D finished
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frontSTOP
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