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Word Ladder
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Pairwise Comparison
Pattern Map
Bidirectional BFS
Input
Example 1: hit -> cog
Example 2: lost -> cost
Simple: a -> c
Custom
beginWord
=
hit
,
endWord
=
cog
,
wordList
=
[hot, dot, dog, lot, log, cog]
hit
hot
dot
dog
lot
log
cog
queue
Expanding
Comparing
Queued
Done
hit
hot
dot
dog
lot
log
cog
queue
Expanding
Comparing
Queued
Done
hit
hot
dot
dog
lot
log
cog
hit
hit
front / rear
queue
Expanding
Comparing
Queued
Done
hit
hot
dot
dog
lot
log
cog
hit
hot
hot
front / rear
queue
Expanding
Comparing
Queued
Done
hit
hot
dot
dog
lot
log
cog
hit
hot
hot
front / rear
queue
Expanding
Comparing
Queued
Done
hit
hot
dot
dog
lot
log
cog
hit
hot
dot
dot
front / rear
queue
Expanding
Comparing
Queued
Done
hit
hot
dot
dog
lot
log
cog
hit
hot
dot
lot
dot
lot
front
rear
queue
Expanding
Comparing
Queued
Done
hit
hot
dot
dog
lot
log
cog
hit
hot
dot
lot
lot
front / rear
queue
Expanding
Comparing
Queued
Done
hit
hot
dot
dog
lot
log
cog
hit
hot
dot
lot
dog
lot
dog
front
rear
queue
Expanding
Comparing
Queued
Done
hit
hot
dot
dog
lot
log
cog
hit
hot
dot
lot
dog
log
dog
log
front
rear
queue
Expanding
Comparing
Queued
Done
hit
hot
dot
dog
lot
log
cog
hit
hot
dot
lot
dog
log
cog
log
front / rear
queue
Expanding
Comparing
Queued
Done
algo
master
.
io
Step:
Start: turn "hit" into "cog" one letter at a time
0 / 31
Input
Example 1: hit -> cog
Example 2: lost -> cost
Simple: a -> c
Custom
beginWord
=
hit
,
endWord
=
cog
,
wordList
=
[hot, dot, dog, lot, log, cog]
0 / 31
algo
master
.
io
Step:
Start: turn "hit" into "cog" one letter at a time
