_2268. Minimum Number of Keypresses.md

2268. Minimum Number of Keypresses

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First completed : July 05, 2024

Last updated : July 05, 2024

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Related Topics : Hash Table, String, Greedy, Sorting, Counting

Acceptance Rate : 71.14 %

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This results in an $O(n)$ despite the sorting due to it only sorting the counts of each letter meaning it sorts at most 26 values.

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Solutions

• m2268.py

Python

m2268.py

class Solution:
    def minimumKeypresses(self, s: str) -> int:
        output = 0
        cnt = Counter(s)
        mapped = 9

        for v in sorted(cnt.values(), reverse=True) :
            cost = mapped // 9
            output += cost * v
            mapped += 1

        return output