Short Python

  • 0

    Just keep in mind if S can be split into K parts evenly, we need to strip "-" on the left.

    class Solution(object):
        def licenseKeyFormatting(self, S, K):
            :type S: str
            :type K: int
            :rtype: str
            S = "".join(S.upper().split("-"))
            end = len(S) % K
            ans = "-".join([S[:end]] + [S[i:i+K] for i in range(end, len(S), K)])
            return ans.lstrip("-")

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