Longest Palindromic Substring 最长回文子串 学习笔记 1. Brute method 第一种方法:直接循环求解, o(n2) o(n^2) 代码语言:javascript 代码运行次数:0 运行 AI代码解释 class Solution: def longestPalindrome(self, s): """ :type s: str :rtype: str """ l = len(s) max_length = 0 palindromic ...
class Solution: def longestPalindrome(self, s: str) -> str: #def longestPalindrome(s: str) -> str: n = len(s) if n < 2: return s # 如果字符串长度小于2,它本身就是最长的回文子串 # dp[i][j]表示s[i:j+1]是否是回文串 dp = [[False] * n for _ in range(n)] start, max_...
Given a strings, find the longest palindromic substring ins. You may assume that the maximum length ofsis 1000. 难度:medium sol 2 Brute Force 挨个检查所有子串,子串O(n^2)*检测所需时间O(n)=O(n^3). 2. sol 1 longest common substring问题 3. dp每增加一个字母,最长列长度只可能增加1or2(...
Given a string s, find the longest palindromic substring in s. You may assume that the maximum length of s is 1000. Example: Input: "babad" Output: "bab" Note: "aba" is also a valid answer. Example: Input: "cbbd" Output: "bb" Pyhton代码如下: classSolution(object):deflongestPalindro...
Given a stringS, find the longest palindromic substring inS. You may assume that the maximum length ofSis 1000, and there exists one unique longest palindromic substring. 这道求最长回文子串的题目非常经典,也有非常多的解法。DP是其中非常经典的解法。具体解法有: 1:DP, 2:枚举中心,向两边走. ...
[Python]Leetcode 5. Longest Palindromic Substring 题目描述 Given a string s, find the longest palindromic substring in s. You may assume that the maximum length of s is 1000. Example 1: Input: “babad” Output: “bab” Note: “ab......
Longest Palindromic Substring Desicription Given a string s, find the longest palindromic substring in s. You may assume that the maximum length of s is 1000. Example: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 Input: "babad" Output: "bab" Note: "aba" is also a valid answer. ...
0005.最长回文子串(Longest Palindromic Substring) 题目描述 题目分析 代码实现 C++ Java Python 题目描述 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。 1 2 3 示例2: 输入: "cbbd" 输出: "...
for i in range(l): # if l - i < m:break 开始想着剩下不够 m 长度时中止,其实下面已经考虑到了。 # k = i + m # 关键点一:长度为 m 的子串不用再考虑 这一点很关键!!! # 也就是跳过 m 个字符,事实上找的是第一个最长的子串。
Leetcode-Medium 5. Longest Palindromic Substring 题目描述 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 长度最长为1000。 Example 1: Input: "babad" Output: "bab" Note: "aba" is also a valid answer. 1. 2. 3. Example 2:...