$n \leq 100000,m \leq 100000$,给长度$n$的字符串$s$和$m$的字符串$t$,只含ABC.定义串$a$可以经过任意次如下操作变成其他串. 现在$q \leq 100000$个询问每次给俩串各指定一个子串,问串$s$的子串能否变成串$t$的子串. 这个题叫细节题,送tourist下榜的..极其恐怖.更恐怖的是他看起来是模拟题,而且pretest极弱,鬼都不知道自己错哪,先给场上AC的各位大佬献个膝盖. 好开始.首先有重要性质:$B->AC->AAB->AAA…

[题目]D. Picking Strings [题意]给定只含'A','B','C'的字符串,支持以下变换:1.A - BC   2.B - AC   3.C - AB   4.AAA - empty string(左边变成右边) 给定S串和T串,q次询问,每次给出S串的一个子串x和T串的一个子串y,求x是否能变到y.n,m,q<=10^5. [算法]模拟??? [题解]观察一些规律,首先B和C等价:B-AC-AAB-AAAC-C. 然后B前面的A可以消除:AB-AAC-AAAB-B. 所以新的…

http://codeforces.com/contest/923/problem/D 题意: A-->BC , B-->AC , C-->AB , AAA-->empty 问指定串S是否能变成目标串T 发现1:B与C等价 B-->AC-->AAB-->AAAC-->C C-->AB-->AAC-->AAAB-->B 发现2:B前面的A可以消去 AB-->AAC-->AAAB-->A 新的变换: A-->BB…

题: OvO http://codeforces.com/contest/947/problem/D 923D 947D 948E 解: 记要改变的串为 P1 ,记目标串为 P2  由变化规则可得: 1. B -> AC -> AAB -> AAAC -> C ( 即 B -> C -> B ) 2. AB -> AAC -> AAAB -> B (即 AB -> B ) 3. B -> AC -> AB ( 即 B -> AB…

[A]Protect Sheep 题意: 一个\(R*C\)的牧场中有一些羊和一些狼,如果狼在羊旁边就会把羊吃掉. 可以在空地上放狗,狼不能通过有狗的地方,狼的行走是四联通的. 问是否能够保护所有的羊不被狼吃掉,如果能输出方案. 题解: 判断是否有羊的旁边有狼,有的话就-1.没有的话把所有空地换成狗就好. #include<bits/stdc++.h> #define F(i,a,b) for(int i=a;i<=(b);++i) #define F2(i,a,b) for(int i…

A. Primal Sport 题意:有两个人轮流玩游戏.给出数X(i-1),轮到的人需要找到一个小于X(i-1)的素数x,然后得到Xi,Xi是x的倍数中大于等于X(i-1)的最小的数.现在已知X2,求最小的X0? 思路:根据题意,X1的取值范围为[X1-X2的最大质因子+1,X2),同理可知X0的取值范围为[X1-X1的最大质因子+1,,X1). #include<iostream> #include<cstring> #include<cstdio> #includ…

A. Protect Sheep time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Bob is a farmer. He has a large pasture with many sheep. Recently, he has lost some of them due to wolf attacks. He thus dec…

March 18, 2016 Problem statement: https://www.hackerrank.com/challenges/two-strings/submissions/code/18506948 Julia likes to try a new way to train herself to expand C#/ C++ / Java / JavaScript languages, by reading the solutions, followed up with so…

StackOverFlow排错翻译 - Python字符串替换: How do I replace everything between two strings without replacing the strings? 原创连接: Python字符串替换 问题: Python:如何将两字符串之间的内容替换掉? I have this string(问题源码): str = ''' // DO NOT REPLACE ME // Anything might be here. Numbers…

Given two numbers represented as strings, return multiplication of the numbers as a string. Note: The numbers can be arbitrarily large and are non-negative. Converting the input string to integer is NOT allowed. You should NOT use internal library su…

Given two non-negative numbers num1 and num2 represented as string, return the sum of num1 and num2. Note: The length of both num1 and num2 is < 5100. Both num1 and num2 contains only digits 0-9. Both num1 and num2 does not contain any leading zero.…

Design an algorithm to encode a list of strings to a string. The encoded string is then sent over the network and is decoded back to the original list of strings. Machine 1 (sender) has the function: string encode(vector<string> strs) { // ... your…

Given a string, we can "shift" each of its letter to its successive letter, for example: "abc" -> "bcd". We can keep "shifting" which forms the sequence: "abc" -> "bcd" -> ... -> &quo…

Given two strings s and t, determine if they are isomorphic. Two strings are isomorphic if the characters in s can be replaced to get t. All occurrences of a character must be replaced with another character while preserving the order of characters.…

Given two numbers represented as strings, return multiplication of the numbers as a string. Note: The numbers can be arbitrarily large and are non-negative. 这道题让我们求两个字符串数字的相乘,输入的两个数和返回的数都是以字符串格式储存的,这样做的原因可能是这样可以计算超大数相乘,可以不受int或long的数值范围的约束,那么我们该如何来计算…

使用strings查看二进制文件中的字符串 今天介绍的这个小工具叫做strings,它实现功能很简单,就是找出文件内容中的可打印字符串.所谓可打印字符串的涵义是,它的组成部分都是可打印字符,并且以null或者newline结尾. 对于普通文本文件来说,strings没有任何意义,因为文本文件中的任何内容实际都是可打印的字符串.strings最常用的场合就是列出动态库或者可执行程序等二进制文件中出现的字符串,结合grep即可实现查找. strings的使用方法很简单,strings [文件]即可,…

Problem: Given two strings s and t, determine if they are isomorphic. Two strings are isomorphic if the characters in s can be replaced to get t. All occurrences of a character must be replaced with another character while preserving the order of cha…

题目简述: Given two strings s and t, determine if they are isomorphic. Two strings are isomorphic if the characters in s can be replaced to get t. All occurrences of a character must be replaced with another character while preserving the order of charac…

res目录strings.xml文件中的转义字符:         ------------------>     代表着一个汉字的位置:                        ------------------>      代表着一个英文的位置,且多个  连续使,也只是转换成一个英文位置: …                         ------------------>      代表着一个…的符号: 待续更新.... 莫等闲,白了少年头,空悲切!…

Power Strings Time Limit: 3000MS   Memory Limit: 65536K Total Submissions: 45005   Accepted: 18792 Description Given two strings a and b we define a*b to be their concatenation. For example, if a = "abc" and b = "def" then a*b = "…

题目链接 Given two numbers represented as strings, return multiplication of the numbers as a string. Note: The numbers can be arbitrarily large and are non-negative 大整数乘法 我们以289*785为例 首先我们把每一位相乘,得到一个没有进位的临时结果,如图中中间的一行红色数字就是临时结果,然后把临时结果从低位起依次进位.对于一个m位整数乘以…

原题链接在这里:https://leetcode.com/problems/add-strings/ 题目: Given two non-negative numbers num1 and num2 represented as string, return the sum of num1 and num2. Note: The length of both num1 and num2 is < 5100. Both num1 and num2 contains only digits 0-9.…

Problem Introduction The edit distinct between two strings is the minimum number of insertions, deletions and mismatches in an alignment of two strings. Problem Description Task.The goal of this problem is to implement the algorithm for computing the…

1. Brief ES6(ECMAScript 6th edition)于2015年7月份发布,虽然各大浏览器仍未全面支持ES6,但我们可以在后端通过Node.js 0.12和io.js,而前端则通过Traceur或Babel这类Transpiler将ES6语法预转译为ES5语法,来提前兴奋一把.而仅需适配IE9+的朋友们现在更是可以开始撸ES6了,而不必为学哪门JavaScript超集语言而烦恼.(ES6又名为ECMAScript 2015或JavaScript.next,ES4的部分较为激进…

Hacking Strings The implementation of Redis strings is contained in sds.c ( sds stands for Simple Dynamic Strings ).The C structure sdshdr declared in sds.h represents a Redis string: struct sdshdr { long len; long free; char buf[]; }; The buf charac…

Write a method anagram(s,t) to decide if two strings are anagrams or not. 判断两个字符串里的字符是否相同,也就是是否能够通过改变字母顺序而变成相同的字符串. 如果是返回true,如果不是返回false. Clarification What is Anagram?- Two strings are anagram if they can be the same after change the order of chara…

[POJ3096]Surprising Strings 试题描述 The D-pairs of a string of letters are the ordered pairs of letters that are distance D from each other. A string is D-unique if all of its D-pairs are different. A string is surprising if it is D-unique for every pos…

Given two strings s and t, determine if they are isomorphic. Two strings are isomorphic if the characters in s can be replaced to get t. All occurrences of a character must be replaced with another character while preserving the order of characters.…

Multiply Strings Given two numbers represented as strings, return multiplication of the numbers as a string. Note: The numbers can be arbitrarily large and are non-negative.     各个位相乘,保存在数组中,最后再处理进位. 如 123*456     4,5,6      8,10,12         12,15,18…

Given two strings s and t, determine if they are isomorphic. Two strings are isomorphic if the characters in s can be replaced to get t. All occurrences of a character must be replaced with another character while preserving the order of characters.…