2361. Calculate Digit Sum of a String
My accepted Python solution to LeetCode problem 2361, Calculate Digit Sum of a String, running in 4ms.
- Difficulty: Easy
- Python
- Runtime 4ms
- Memory 17.2MB
- Updated
Read the problem on LeetCode View on GitHub
The problem statement is LeetCode’s and stays on their site. What follows is my accepted solution.
Python
Accepted on LeetCode — runtime 4ms, memory 17.2MB, accepted 2025-12-29.
class Solution:
def digitSum(self, s: str, k: int) -> str:
while len(s) > k:
new_s = ""
for i in range(0, len(s), k):
group = s[i:i+k]
digit_sum = sum(int(c) for c in group)
new_s += str(digit_sum)
s = new_s
return s