LeetCode 习题 17. 电话号码的字母组合

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36 ms

1. class Solution:
   
2.     def letterCombinations(self, digits: str) -> list:
   
3.         from itertools import product
   
4.         return ["".join(i) for i in product(*[["", "", "abc", "def", "ghi", "jkl", "mno", "pqrs", "tuv", "wxyz"][int(i)] for i in digits])] if digits else []

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