_1945. Sum of Digits of String After Convert.md

1945. Sum of Digits of String After Convert

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First completed : September 03, 2024

Last updated : September 03, 2024

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Related Topics : String, Simulation

Acceptance Rate : 74.85 %

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Solutions

• e1945.py

Python

e1945.py

class Solution:
    def getLucky(self, s: str, k: int) -> int:
        def helper(curr, k: int) -> int :
            if not k :
                return curr

            newCurr = 0
            while curr :
                newCurr += curr % 10
                curr //= 10
            return helper(newCurr, k - 1)

        newCurr = 0
        for c in s :
            if ord(c) - ord('a') + 1 >= 10 :
                newCurr = 100 * newCurr + ord(c) - ord('a') + 1
            else :
                newCurr = 10 * newCurr + ord(c) - ord('a') + 1

        return helper(newCurr, k)