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LeetCode-Solutions/Python/unique-morse-code-words.py at master · pythonpeixun/LeetCode-Solutions · GitHub
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LeetCode-Solutions
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Python
/
unique-morse-code-words.py
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LeetCode-Solutions
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Python
/
unique-morse-code-words.py
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# Time: O(n), n is the sume of all word lengths
# Space: O(n)
class
Solution
(
object
):
def
uniqueMorseRepresentations
(
self
,
words
):
"""
:type words: List[str]
:rtype: int
"""
MORSE
=
[
".-"
,
"-..."
,
"-.-."
,
"-.."
,
"."
,
"..-."
,
"--."
,
"...."
,
".."
,
".---"
,
"-.-"
,
".-.."
,
"--"
,
"-."
,
"---"
,
".--."
,
"--.-"
,
".-."
,
"..."
,
"-"
,
"..-"
,
"...-"
,
".--"
,
"-..-"
,
"-.--"
,
"--.."
]
lookup
=
{
""
.
join
(
MORSE
[
ord
(
c
)
-
ord
(
'a'
)]
for
c
in
word
) \
for
word
in
words
}
return
len
(
lookup
)
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