Longest Common Substring 最长公共子字符串 动态规划问题 动态规划问题的两个特点: 1.最优子结构 2.重叠子问题 因为有重叠子问题,当前计算的过程中可能有的问题在之前的计算已经计算过了,现在又要计算一遍,导致大量重复的计算。 动态规划通过找到解决问题的递推关系,将已经完成计算的存储起来, 当开始新的计算时如果...
Given two stringstext1andtext2, return the length of their longest common subsequence. Asubsequenceof a string is a new string generated from the original string with some characters(can be none) deleted without changing the relative order of the remaining characters. (eg, "ace" is a subsequen...
Longest Palindromic Substring LeetCode—5. Longest Palindromic Substring 题目https://leetcode.com/problems/longest-palindromic-substring/description/ 寻找最长回文子串。 思路及解法 在字符串中首先选择一个点,从这个点开始向两边扩展开去,不断比较两端的字符是不是相等。需要注意的是,回文子串的长度可奇可 ...
7Manacher算法 这是LeetCode官网上的一种复杂度只到 O(n)的解法,可以说是屌炸天了,膜拜中... ... 如果你感兴趣的话可以了解一下,地址在这里:https://articles.leetcode.com/longest-palindromic-substring-part-ii/ 题外话:由于本人最近工作比较忙,所以刷题数量可能会稍微降低一点,但是会保证一周最少3-4题,...
题目https://leetcode-cn.com/problems/longest-common-subsequence/ 看题解的...Longest Common Subsequence(C++最长公共子序列) 解题思路: (1)动态规划 ...最长公共子串(Longest Common Substring)和最长公共子序列(Longest Common Subsequence) 最长公共子串(Longest Common Substring)和最长公共子序列(Longest ...
【LeetCode】Longest Common Prefix(最长公共前缀) 这道题是LeetCode里的第14道题。 题目描述: 编写一个函数来查找字符串数组中的最长公共前缀。 如果不存在公共前缀,返回空字符串 ""。 示例 1: 示例 2: 说明: 所有输入只包含小写字母 a-z 。 总共有 5 种思路: 所求的最长公共前缀子串一定是每个字符串的...
LeetCode 1143. Longest Common Subsequence classic DP problem, LCS Given two strings text1 and text2, return the length of their longest common subsequence. 虽然不记得如何写的了 但是知道是DP 也知道应该用2D dp去记录 dp[i][j] represents for the LCS if text1 has a lengt......
Write a function to find the longest common prefix string amongst an array of strings. Solution: cla ... hdu 1403 Longest Common Substring(最长公共子字符串)(后缀数组) http://acm.hdu.edu.cn/showproblem.php?pid=1403 Longest Common Substring Time Limit: 8000/4000 MS (Ja ... leetcode【14...
Next, I'll show you how doulbe pointers work in a real leetcode problem. string longestPalindrome(string s) {} 1. Thinking Given a string s, find the longest palindromic substring in s. A very interesting pespective: 1. Reversing s in to s' 2. Finding the longest common substring. ...
https://leetcode.com/problems/longest-substring-without-repeating-characters/ Given a string, find the length of thelongest substringwithout repeating characters. Example 1: Input: "abcabcbb" Output: 3 Explanation: The answer is "abc", with the length of 3. ...