482.md

482 License Key Formatting

Description

link

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Solution

• See Code

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Code

O(n) O(1)

class Solution:
    def licenseKeyFormatting(self, S: str, K: int) -> str:
        S = S.replace("-", "").upper()[::-1]
        return '-'.join(S[i:i+K] for i in range(0, len(S), K))[::-1]