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unique-morse-code-words.py 600 Bytes
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Allen Liu 提交于 2018-10-12 01:33 +08:00 . remove sensitive question description
# 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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