题目:给你一个字符串s和一个整数k,请你找出s中的最长子串, 要求该子串中的每一字符出现次数都不少于k。返回这一子串的长度。 示例: 输入:s = "aaabb", k = 3输出:3解释:最长子串为 "aaa" ,其中 'a' 重复了 3 次。 分析:这道题给了我们一个字符串s和一个正整数k,让求一个最大子字符串并且每...
c = defaultdict(int) # 最长字符串 res = 0 for right in range(n): c[s[right]] += 1 # 不同字符个数 if c[s[right]] == 1: cur += 1 # 大于等于k个数 if c[s[right]] == k: ge_k += 1 # 当字符串不同个数大于 num while cur > num: if c[s[left]] == 1: cur -...
AI代码解释 classSolution{public:intlongestSubstring(string s,int k){//递归结束条件:if(s.size()<k)return0;//通过一个哈希表统计当前字符串s中每个字符出现的次数unordered_map<int,int>counter;for(char c:s)//范围forcounter[c]++;//用一个set容器保存s中出现过的所有字符,这样可以去除掉重复字符unor...
Given a string s and an integer k, return the length of the longest substring of s such that the frequency of each character in this substring is greater than or equal to k. if no such substring exists, return 0. Example 1: Input: s = "aaabb", k = 3 Output: 3 Explanation: The...
LeetCode395至少有 K 个重复字符的最长子串,把大问题拆解成了小问题,恰好有函数可以解决小问题,所以直接用这个函数。由于这个函数正好是本身,所以我们把此现象叫做递归。小问题是原因,递归是结
[LeetCode] 395. Longest Substring with At Least K Repeating Characters 至少有K个重复字符的最长子字符串 Find the length of the longest substringTof a given string (consists of lowercase letters only) such that every character inTappears no less thanktimes....
LeetCode刷题实战395:至少有 K 个重复字符的最长子串,算法的重要性,我就不多说了吧,想去大厂,就必须要经过基础知识和业务逻辑面试+算法面试。所以,为了提高大家的算法能力,这个公众号后续每天带大家做一道算法题,题目就从LeetCode上面选!今天和大家聊的问题叫
395. 至少有 K 个重复字符的最长子串【中等】 https://leetcode-cn.com/problems/longest-substring-with-at-least-k-repeating-characters/ 问题定义: 给你一个字符串 s 和一个整数 k ,请你找出 s 中的最长子串,要求该子串中的每一字符出现次数都不少于 k。返回这一子串的长度。
395.Longest-Substring-with-At-Least-K-Repeating-Characters (H) 1763.Longest-Nice-Substring (H) 2009.Minimum-Number-of-Operations-to-Make-Array-Continuous (M+) 2024.Maximize-the-Confusion-of-an-Exam (M) 424.Longest-Repeating-Character-Replacement (H-) 2106.Maximum-Fruits-Harvested-After-at-Mos...
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