https://www.hackerrank.com/challenges/how-many-substrings/problem 题解 似乎是被毒瘤澜澜放弃做T3的一道题(因为ASDFZ有很多人做过,当然,他换了一道更毒瘤的--) 仓鼠在最后一天的时候提了一嘴然后我发现依旧菜菜的不会--(因为太菜模拟天天被吊打) 仓鼠好神仙啊%%%(烤熟了味道怎么样啊) 这道题三个数据结构结合在一起使用,但是感觉却没有那么码农,就是直接把板子套一套(当然板子不熟另当别论),用namespace的话可以降低编码…

[LeetCode]647. Palindromic Substrings 解题报告(Python) 标签: LeetCode 题目地址:https://leetcode.com/problems/palindromic-substrings/description/ 题目描述: Given a string, your task is to count how many palindromic substrings in this string. The substrings with dif…

[题目]F. Substrings in a String [题意]给定小写字母字符串s,支持两种操作:1.修改某个位置的字符,2.给定字符串y,查询区间[l,r]内出现y多少次.|s|,Σ|y|<=10^5,time=6s. [算法]Bitset [题解]假设S的长度为n,那么对每个字符建一个长度为n的bitset,1表示该位置为该字符,修改时直接修改. 查询的时候将字符串y所有的字符的bitset,按顺序错位and,这样最后得到1表示y为子串,count一下即可. 复杂度O(n^2/32),…

Description Given a string, your task is to count how many palindromic substrings in this string. The substrings with different start indexes or end indexes are counted as different substrings even they consist of same characters. Example 1: Input: "…

题目链接:Running Time of Quicksort Challenge In practice, how much faster is Quicksort (in-place) than Insertion Sort? Compare the running time of the two algorithms by counting how many swaps or shifts each one takes to sort an array, and output the dif…

Consider the string s to be the infinite wraparound string of "abcdefghijklmnopqrstuvwxyz", so s will look like this: "...zabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcd....". Now we have another string p. Your job is to find…

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 组合数 日期 题目地址:https://leetcode-cn.com/problems/count-substrings-with-only-one-distinct-letter/ 题目描述 Given a string S, return the number of substrings that have only one distinct l…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 题目地址: https://leetcode.com/problems/unique-substrings-in-wraparound-string/description/ 题目描述: Consider the string s to be the infinite wraparound string of "abcdefghijklmnopqrstuvwxyz", so…

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 方法一:暴力循环 方法二:固定起点向后找 方法三:动态规划 日期 题目地址:https://leetcode.com/problems/palindromic-substrings/description/ 题目描述 Given a string, your task is to count how many palindromic substrin…

http://www.spoj.com/problems/DISUBSTR/ 题意:求字符串不同子串的数目. #include <bits/stdc++.h> using namespace std; const int N=1005; void sort(int *x, int *y, int *sa, int n, int m) { static int c[N], i; for(i=0; i<m; ++i) c[i]=0; for(i=0; i<n; ++i) ++c[x[y…