Can you solve this real interview question? Longest Nice Substring - A string s is nice if, for every letter of the alphabet that s contains, it appears both in uppercase and lowercase. For example, "abABB" is nice because 'A' and 'a' appear, and 'B' and
来自专栏 · LeetCode·力扣·300首 目录 收起 读题 解法一,dp 动态规划 解法解释 针对DP解法的解释 1. 状态定义 2. 基础状态 3. 状态转移方程 4. 遍历顺序 5. 更新最长回文子串信息 6. 返回结果 复杂度分析 读题 解法一,dp 动态规划 class Solution: def longestPalindrome(self, s: str) -> st...
Given a strings, returnthe longestpalindromicsubstringins. Example 1: Input:s = "babad"Output:"bab"Explanation:"aba" is also a valid answer. Example 2: Input:s = "cbbd"Output:"bb" Constraints: 1 <= s.length <= 1000 sconsist of only digits and English letters. Accepted 3.8M Submission...
classSolution{publicintlengthOfLongestSubstring(String s){intans=0; Map<Character, Integer> map =newHashMap<>();for(intl=0, r =0; r < s.length(); ++r) {charc=s.charAt(r);if(map.containsKey(c) && l <= map.get(c)) { l = map.get(c) +1; }else{ ans = Math.max(r - ...
public class Solution { /** * @param s: input string * @return: the longest palindromic substring */ public String longestPalindrome(String s) { // write your code here char[] S = s.toCharArray(); int sLength = S.length; String[][] f = new String[sLength ][sLength ]; return ...
LeetCode算法题有一个技巧:先看每道题的example,大部分情况看完example就能理解题目意思;如果看完example还有疑惑,可以再回过头来看英文题目。这样也可以节省一点时间~ 题目描述 Given a string s, return the longest palindromic substring in s. 经典的题目,最长回文子串,所谓回文字符串:正反字符串相等 Examples1th...
给定一个字符串 s,找到 s 中最长的回文子串。你可以假设 s 的最大长度为 1000。 示例1: 输入: "babad" 输出: "bab" 注意: "aba" 也是一个有效答案。 示例2: 输入: "cbbd" 输出: "bb" 来源:力扣(LeetCode) 链接:https://leetcode-cn.com/problems/longest-palindromic-substring ...
题目地址:https://leetcode.com/problems/longest-substring-without-repeating-characters/description/ 题目描述 Given a string, find the length of thelongest substringwithout repeating characters. Example 1: Input: "abcabcbb" Output: 3 Explanation: The answer is "abc", which the length is 3. ...
给定一个整数数组nums和一个整数k。当子数组中有 k 个奇数时,称之为nice。 要求返回nice子数组的个数。 栗1: 输入: nums = [1,1,2,1,1], k = 3 输出: 2 解释: 包含3 个奇数的子数组有:[1,1,2,1],[1,2,1,1] 栗2: 输入:nums = [2,4,6], k = 1 ...
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