后缀数组的应用.和男人八题那个后缀数组差不多. /* 2890 */ #include <iostream> #include <sstream> #include <string> #include <map> #include <queue> #include <set> #include <stack> #include <vector> #include <deque> #include &…

[LeetCode]522. Longest Uncommon Subsequence II 解题报告(Python) 标签(空格分隔): LeetCode 作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 题目地址:https://leetcode.com/problems/longest-uncommon-subsequence-ii/description/ 题目描述: Given a list of strings, you…

Given an unsorted array of integers, find the length of longest increasing subsequence. For example, Given [10, 9, 2, 5, 3, 7, 101, 18], The longest increasing subsequence is [2, 3, 7, 101], therefore the length is 4. Note that there may be more than…

题目: Given two strings, find the longest common subsequence (LCS). Your code should return the length of LCS. Clarification What's the definition of Longest Common Subsequence? https://en.wikipedia.org/wiki/Longest_common_subsequence_problem http://ba…

题目: Given a sequence of integers, find the longest increasing subsequence (LIS). You code should return the length of the LIS. Clarification What's the definition of longest increasing subsequence? The longest increasing subsequence problem is to fin…

problem 594. Longest Harmonious Subsequence 最长和谐子序列 题意: 可以对数组进行排序,那么实际上只要找出来相差为1的两个数的总共出现个数就是一个和谐子序列的长度了. solution1: 使用hashmap 用 HashMap 来做,先遍历一遍,建立每个数字跟其出现次数之间的映射,然后再遍历每个数字的时候,只需在 HashMap 中查找该数字加1是否存在,存在就更新结果 res. class Solution { public: int findLH…

problem 521. Longest Uncommon Subsequence I 最长非共同子序列之一 题意: 两个字符串的情况很少,如果两个字符串相等,那么一定没有非共同子序列,反之,如果两个字符串不等,那么较长的那个字符串就是最长非共同子序列. solution: class Solution { public: int findLUSlength(string a, string b) { ; return max(a.size(), b.size()); } }; or class…

题目如下: Given an integer array arr and an integer difference, return the length of the longest subsequence in arr which is an arithmetic sequence such that the difference between adjacent elements in the subsequence equals difference. Example 1: Input:…

题目如下: Given two strings text1 and text2, return the length of their longest common subsequence. A subsequence of a string is a new string generated from the original string with some characters(can be none) deleted without changing the relative order…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 统计次数 日期 题目地址:https://leetcode.com/problems/longest-harmonious-subsequence/description/ 题目描述 We define a harmonious array is an array where the difference between its maximum va…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 日期 题目地址:https://leetcode.com/problems/longest-uncommon-subsequence-i/description/ 题目描述 Given a group of two strings, you need to find the longest uncommon subsequence of this g…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题思路 代码 刷题心得 日期 题目地址:https://leetcode.com/problems/longest-palindromic-subsequence/description/ 题目描述 Given a string s, find the longest palindromic subsequence's length in s. You ma…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 日期 题目地址:https://leetcode.com/problems/longest-increasing-subsequence/description/ 题目描述 Given an unsorted array of integers, find the length of longest increasing subsequence. E…

题目如下: 解题思路:因为given list长度最多是50,我的解法就比较随意了,直接用一个嵌套的循环,判断数组中每个元素是否是其他的subsequence,最后找出不属于任何元素subsequence的最长元素即可. 代码如下: class Solution(object): def isSubsequence(self, a, b): """ :type a: str :type b: str :rtype: int """ s = b f…

后缀数组2倍增可解. #include <cstdio> #include <cstring> #include <cstdlib> #define MAXM 28 #define MAXN 100010 ]; ]; ]; ]; char s[MAXN]; ], sa[MAXN*]; ], rank[MAXN*]; bool cmp(int *r, int a, int b, int l) { return r[a]==r[b] && r[a+l]==r…

题目如下: 解题思路:很经典的动态规划题目,但是用python会超时,只好用C++了. 代码如下: class Solution { public: int longestPalindromeSubseq(string s) { ][] = {}; ; ;i >=;i--){ ;j<s.length();j++){ dp[i][i] = ; if (s[i] == s[j]){ dp[i][j] = dp[i][j] > dp[i+][j-]+ ? dp[i][j] :dp[i+][j-…

[SP1812]LCS2 - Longest Common Substring II 题面 洛谷 题解 你首先得会做这题. 然后就其实就很简单了, 你在每一个状态\(i\)打一个标记\(f[i]\)表示状态\(i\)能匹配到最长的子串长度, 显然\(f[i]\)可以上传给\(f[i.fa]\). 然后去每个串和第\(1\)个串\(f\)的最小值的最大值即可. 代码 #include <iostream> #include <cstdio> #include <cstdlib&…

[SP1811]LCS - Longest Common Substring 题面 洛谷 题解 建好后缀自动机后从初始状态沿着现在的边匹配, 如果失配则跳它的后缀链接,因为你跳后缀链接到达的\(Endpos\)集合中的串肯定是当前\(Endpos\)中的后缀,所以这么做是对的. 你感性理解一下,这样显然是最大的是吧... 具体实现看代码: 代码 #include <iostream> #include <cstdio> #include <cstdlib> #inclu…

[题解]Greatest Common Increasing Subsequence vj 唉,把自己当做DP入门选手来总结这道题吧,我DP实在太差了 首先是设置状态的技巧,设置状态主要就是要补充不漏并且适合转移. 这样的区间对区间有个设置状态的技巧:一维钦定一维区间 具体来说,是这个意思: 我们要方便记录状态 ,所以我们记录一维区间的答案 我们要可以转移,所以我们钦定一个状态方便转移 我们要方案互斥,所以我们钦定一个状态方便转移(方法同上,钦定这个技巧同时满足了两种要求) 接下来是对于方案的记…

[LeetCode]334. Increasing Triplet Subsequence 解题报告(Python) 标签(空格分隔): LeetCode 题目地址:https://leetcode.com/problems/increasing-triplet-subsequence/description/ 题目描述: Given an unsorted array return whether an increasing subsequence of length 3 exists or…

Longest Increasing Subsequence Given an unsorted array of integers, find the length of longest increasing subsequence. Example: Input: [10,9,2,5,3,7,101,18] Output: 4 Explanation: The longest increasing subsequence is [2,3,7,101], therefore the lengt…

Difficulty: Hard  More:[目录]LeetCode Java实现 Description Given a string S, find the length of the longest substring T that contains at most two distinct characters.For example,Given S = “eceba”,T is "ece" which its length is 3. Intuition 方法一:假设有一个…

题目如下: Given an array A of integers, return the length of the longest arithmetic subsequence in A. Recall that a subsequence of A is a list A[i_1], A[i_2], ..., A[i_k] with 0 <= i_1 < i_2 < ... < i_k <= A.length - 1, and that a sequence B is…

problem 674. Longest Continuous Increasing Subsequence solution class Solution { public: int findLengthOfLCIS(vector<int>& nums) { , cnt = , cur = INT_MAX; for(auto num:nums) { if(num>cur) cnt++; ; res = max(res, cnt); cur = num; } return res…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 动态规划 空间压缩DP 日期 题目地址:https://leetcode.com/problems/longest-continuous-increasing-subsequence/description/ 题目描述 Given an unsorted array of integers, find the length of longest co…

DP/单调队列优化 题解:http://www.cnblogs.com/yymore/archive/2011/06/22/2087553.html 引用: 首先我们要明确几件事情 1.假设我们现在知道序列(i,j)是符合标准的,那么如果第j+1个元素不比(i,j)最大值大也不比最小值小,那么(i,j+1)也是合法的 2.如果(i,j)不合法的原因是差值比要求小,那在(i,j)范围内的改动是无效的,需要加入j+1元素充当最大值或者最小值才可能获得合法的序列 3.假设序列(i,j)的差值比要求大,…

LCIS /* 1423 */ #include <cstdio> #include <cstring> #include <cstdlib> #define MAXN 505 int a[MAXN]; int b[MAXN]; int c[MAXN]; int n, m; int ans; int max(int a, int b) { return a>b ? a:b; } void solve() { int i, j, k; memset(c, , siz…

其实是求树上的路径间的数据第K大的题目.果断主席树 + LCA.初始流量是这条路径上的最小值.若a<=b,显然直接为s->t建立pipe可以使流量最优:否则,对[0, 10**4]二分得到boundry,使得boundry * n_edge - sum_edge <= k/b, 或者建立s->t,然后不断extend s->t. /* 4729 */ #include <iostream> #include <sstream> #include <…

题目: Given a string, find the length of the longest substring without repeating characters. Examples: Given "abcabcbb", the answer is "abc", which the length is 3. Given "bbbbb", the answer is "b", with the length of…

Given a string, find the length of the longest substring without repeating characters. Examples: Given "abcabcbb", the answer is "abc", which the length is 3. Given "bbbbb", the answer is "b", with the length of 1.…