bzoj hash+map+set

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先对原串分组hash,查询就是看某一区间内是否出现某值. 可以每个值存一个集合,保存这个值出现的位置.(也可以建可持久化值域线段树) map<int,set<int> >很省事... (Yes写成了YES,狂WA) #include <cstdio> #include <map> #include <set> #define N 1000010 #define Mod 9999990000001LL #define Base 100000007L…

Hash Map (Hash Table)

Reference: Wiki PrincetonAlgorithm What is Hash Table Hash table (hash map) is a data structure used to implement an associative array, a structure that can map keys to values.A hash table uses a hash function to compute an index into an array of bu…

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A small coding test that I encountered today. Question Using only primitive types, implement a fixed-size hash map that associates string keys with arbitrary data object references (you don't need to copy the object). Your data structure should be op…

hdu1381 Crazy Search(hash map)

题目意思: 给出一个字符串和字串的长度,求出该字符串的全部给定长度的字串的个数(不同样). 题目分析: 此题为简单的字符串哈hash map问题,能够直接调用STL里的map类. map<string,int> snum; AC代码: #include<iostream> #include<string> #include<map> using namespace std; int main() { int t,n,nc; cin>>t; whi…

[LeetCode] Repeated DNA Sequences hash map

All DNA is composed of a series of nucleotides abbreviated as A, C, G, and T, for example: "ACGAATTCCG". When studying DNA, it is sometimes useful to identify repeated sequences within the DNA. Write a function to find all the 10-letter-long seq…

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目录 HashMap在java中的应用及示例 HashMap的内部结构 HashMap的性能同步HashMap HashMap的构造函数 HashMap的时间复杂度 HashMap的方法 1. void clear():用于从映射中删除所有映射. 2. boolean containsKey(key_element)查询是否存在指定键的映射 3. boolean containsValue(Object value):用于删除映射中任何特定键的值 4. Object clone():它用于返回…

Redis的增删改查 c# key value类型和hash map 类型

using Newtonsoft.Json; using StackExchange.Redis; using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace AIMS.RedisMng { public class RedisContext : IRedisContext { private readon…