letter_case_permutation.py (611B)
| # 784. Letter Case Permutation
from itertools import product
"""
given a string 's', you can transform every letter individually to be
lowercase or uppercase. return a list of all possible strings we could
create. return the output in any order.
"""
class Solution(object):
def letterCasePermutation(self, s):
"""
:type s: str
:rtype: List[str]
"""
return map("".join, product(*[set([i.lower(), i.upper()]) for i in s]))
if __name__ == "__main__":
obj = Solution()
print(obj.letterCasePermutation(s="a1b2"))
print(obj.letterCasePermutation(s="3z4"))
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