Table of Contents 1.Framework 2. Structure unordered_map unordered_set 3. Modifications to HashTable Change template parameters 4. Add an iterator a. Structure b. Operator overloading c.HashTable encapsulates iterator d.Iterators of unordered_map and unordered_set 1.Frame 1. Reuse HashTable ~~> Add template parameter KeyOfT to obtain Key value unordered_map passes K, V unordered_set passes K 2. Add iterator: […]
Tag: unordered
(STL hash) unordered_map
1. unordered series containers In C++98, STL provides a series of associative containers with red-black tree structures at the bottom, including set, multiset, map and multimap. The time complexity of query operations for these containers is O ( log N ) O(logN)O(logN), where N is the number of elements in the container. In order to […]
unordered_map/set
1.unordered series associative containers In C++98, STL provides a series of associative containers with a red-black tree structure at the bottom. However, when there are many nodes, the query efficiency is not ideal. Therefore, in C++11, STL provides There are four unordered series of associative containers. These four containers are basically similar to the associative […]
C++ custom STL container memory allocator (map, set, vector, string, unordered_map, unordered_set)
Notice: When using the C++ 11/14 standard, you should comment the following code and restore the above commented code, that is, set the compiler option standard to: -std=cxx1z, -std=cxx2a. // C++17…cxx1z //template <class _Iter> //constexpr void* _Voidify_iter(_Iter _It) noexcept { // if constexpr (std::is_pointer<_Iter>::value) { // return const_cast<void*>(static_cast<const volatile void*>(_It)); // } // else { […]
Unordered series associative containers–detailed explanation and usage examples of hash structure
Directory unordered series associative containers unordered_map Hash Hash concept Hash function Direct addressing method: Division with remainder method: Hash collision Resolve hash collisions Closed hash: Open hash: Underlying structure hash table–code implementation: Use hash structure to implement set: Use hash structure to implement map: Applications of hashing bitmap bitmap concept Bitmap implementation bloom filter Bloom […]
How to insert ordered and unordered lists into Word documents through C# code
Foreword: When editing a Word document, using an ordered list or an unordered list can help us better organize the document content and make its logical relationship more intuitive and easy to understand. For example, create multiple subtitles in the article, or list multiple matters of the same type, etc. An ordered list arranges the […]
[Complete code of hash table] Simulate the implementation of hash table and unordered_set and unordered_map
Table of Contents HashTable.h: Test.cpp: MyUnorderedSet.h: HashTable.h: #pragma once #include<iostream> #include<vector> #include<utility>//pair header file #include<assert.h> #include<string> using namespace std; namespace CLOSEHASH { enum State { EMPTY, //empty EXIST, //exists DELETE //Delete }; template<class T> struct HashData { T_data; State _state; //Represents data status HashData() :_state(EMPTY) ,_data(0) {} }; template<class K, class T, class KeyOfT> classHashTable […]
B – Influence on Social media, factor decomposition, thinking, unordered_map
Influence on Social media – Problems – CodeChef Problem Recently social media has been flooded by fb posts, tweets, news articles about only thing – demonetization. A great debate is ongoing over it. Most of the people discussing in social media platform usually tend to take sides, i.e. either they support the move, or they […]
[C++] Hash – unordered series containers | Hash conflict | Closed hashing | Open hashing
Article directory 1. Unordered series of associative containers 2. Hash concept 3. Hash collision 4. Hash function 5. Resolve hash conflicts 1. Closed hashing – open addressing method 2. Code implementation 3. Open hashing – open chain method 4. Code implementation 6. Conclusion 1. Unordered series of associative containers In C++98, STL provides a series […]
Encapsulation of unordered_map and unordered_set
In STL, the search of unordered_map and unordered_set is at the ceiling level. Their underlying logic is very simple, which is hash poke. The logic of hash poke is very simple, just different linked lists and arrays (in my opinion). But don’t insist on implementing unordered_map and unordered_set. It’s very simple. Just like cooking, each […]