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목록Longest Substring with At Least K Repeating Characters (1)
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LeetCode: 395. Longest Substring with At Least K Repeating Characters
Idea: Any characters that have frequencies less than k work as a breakpoints, meaning that the substring we're looking for can't include that particular character. So, recursively look for substrings while excluding those characters. Time complexity is O(N). from collections import Counter class Solution: def longestSubstring(self, s: str, k: int) -> int: return self.helper(s, k) def helper(self..
Computer Science/Coding Test
2022. 1. 16. 13:49