题目链接: Lightoj  1044 - Palindrome Partitioning 题目描述: 给一个字符串,问至少分割多少次?分割出来的子串都是回文串. 解题思路: 先把给定串的所有子串是不是回文串处理出来,然后用dp[i] 表示 从起点到串i的位置的最少分割次数,然后结合处理出来的回文串转移一下即可! 还是好蠢哦!自己竟然感觉是一个区间DP,但是n又那么大,完全不是区间DP的作风啊! #include <cmath> #include <cstdio> #include…

A palindrome partition is the partitioning of a string such that each separate substring is a palindrome. For example, the string "ABACABA" could be partitioned in several different ways, such as {"A","B","A","…

题目链接:http://lightoj.com/volume_showproblem.php?problem=1044 题意:求给出的字符串最少能分成多少串回文串. 一般会想到用区间dp暴力3个for但是这里的数据有1000,3个for肯定超时的. 但是这题只是判断回文串有多少个所以可以先预处理一下[i,j]是不是回文,然后 就是简单dp了 for(int i = 1 ; i <= len ; i++) { ans[i] = ans[i - 1] + 1; for(int j = i - 1 ;…

题目链接:http://lightoj.com/volume_showproblem.php?problem=1044 dp[i][j]表示i到j直接的最小回文区间个数,直接看代码 #include <bits/stdc++.h> using namespace std; ; int dp[N][N], inf = 1e9; char str[N]; bool judge(int l, int r) { , j = r - ; i < j; ++i, --j) { if(str[i] !…

题目大意: 给你一个字符串,问这个字符串最少有多少个回文串. 区间DP直接搞     #include<cstdio> #include<cstring> #include<iostream> #include<algorithm> #include<cmath> #include<queue> #include<vector> #include<map> using namespace std; typede…

Description A palindrome partition is the partitioning of a string such that each separate substring is a palindrome. For example, the string "ABACABA" could be partitioned in several different ways, such as {"A","B","A&…

Atcoder Yet Another Palindrome Partitioning 思路: 一个字符串满足条件的情况是奇数字母个数小于等于1,也就是异或起来是1<<j(0<=j<=25)或者是0 记mark是异或起来的值 状态转移: dp[mark]=dp[mark]+1; dp[mark]=min(dp[mark^(1<<j)]+1,dp[mark]);(0<=j<=25) 注意dp[0]被转移后可能会变成1,但是由它转移的需要dp[0]=0,所以每次…

Given a string s, partition s such that every substring of the partition is a palindrome. Return the minimum cuts needed for a palindrome partitioning of s. For example, given s = "aab",Return 1 since the palindrome partitioning ["aa",…

Given a string s, partition s such that every substring of the partition is a palindrome. Return all possible palindrome partitioning of s. For example, given s = "aab",Return [ ["aa","b"], ["a","a","…

题目链接 You are given a string s containing lowercase letters and an integer k. You need to : First, change some characters of s to other lowercase English letters. Then divide s into k non-empty disjoint substrings such that each substring is palindrom…