_next(nullptr){}};template<classK>struct keyToIntFunc{size_toperator()(constK&key){returnkey;}};//对string类型进行特化template<>struct keyToIntFunc<string>{size_toperator()(conststring&key){size_t sum=0;for(auto&e:key){sum=sum*31+e;}returnsum;}};name...
__cpp_lib_constexpr_unordered_map202502L(C++26)constexprstd::unordered_map Example Run this code #include <iostream>#include <string>#include <unordered_map>intmain(){// Create an unordered_map of three strings (that map to strings)std::unordered_map<std::string,std::string>u={{"RED"...
second << endl; } } 4. Test.cpp #define _CRT_SECURE_NO_WARNINGS #include <iostream> using namespace std; #include <vector> #include "HashTable.h" #include "UnorderedSet.h" #include "UnorderedMap.h" #include <string> int main() { //UnorderedSet_test1(); UnorderedMap_test1();...
HashTable.cpp文件 #pragma oncenamespace hash_bucket{template<class K>struct DefaultHashFunc{size_t operator()(const K& key){return (size_t)key;}};template<>struct DefaultHashFunc<string>{size_t operator()(const string& str){size_t hashi = 0;for (auto ch : str){hashi = hashi * 131...
https://github.com/Yufccode/BitCode/tree/main/Cpp open_hash.h #pragmaonce//tips: deepcopy hasn't realize#include<map>#include<set>#include<vector>#include<string>#include<iostream>usingnamespacestd;//开散列//拉链法//哈希桶template<classK>structHashFunc{//目的就是把一个复杂类型转化成一个...
From cppreference.com std::unordered_map Member types Member functions unordered_map::unordered_map unordered_map::~unordered_map unordered_map::operator= unordered_map::get_allocator Iterators unordered_map::beginunordered_map::cbegin unordered_map::endunordered_map::cend ...
class Ref,class Ptr, class KeyOfT, class Hash > struct HTIterator { typedef HashNode<T> Node; Node* _node; typedef HTIterator<K, T, Ref, Ptr,KeyOfT, Hash> Self; //哈希表的指针 const HashTable< K, T, KeyOfT, Hash>* _pht;//向上查找哈希表 HTIterator(Node* node, const HashTable...
简介:unordered_map和unordered_set的源码模拟实现 在源码中,这两个STL容器都是共用一个框架的所以,我们就用一个框架实现两个 容器,代码细节都在注释上 HashTable.h #pragma once#define _CRT_SECURE_NO_WARNINGS 1#include <iostream>#include <vector>#include <string>#include <utility>#include <algorithm>#...
// std__unordered_map__unordered_map_clear.cpp // compile with: /EHsc #include <unordered_map> #include <iostream> typedef std::unordered_map<char, int> Mymap; int main() { Mymap c1; c1.insert(Mymap::value_type('a', 1)); c1.insert(Mymap::value_type('b', 2)); c1.inser...
To insert an element into a map we can use the member function .insert()member function: #include<iostream>#include<unordered_map>intmain()/*www.java2s.com*/{ std::unordered_map<char,int> myunorderedmap = { {'a', 1}, {'b', 2}, {'c', 5} }; myunorderedmap.insert({'d', ...