Decrypt the mysterious power of set and multiset containers introduction 1. Overview of set and multiset containers 2. Commonly used APIs for set containers 3. Common APIs of multiset Fourth, the group pair 4.1. Concept 4.2. How to create a pair 5. Example of use 5.1. Redefine the sorting rules 5.2, the use of team […]
Tag: multiset
CF 1702F – Equate Multisets
Equate Multisets Multiset -is a set of numbers in which there can be equal elements, and the order of the numbers does not matter. Two multisets are equal when each value occurs the same number of times. For example, the multisets { 2 , 2 , 4 2,2,4 2,2,4} and { 2 , 4 , […]
32, set/multiset container
32.1 Basic concept of set Introduction: All elements will be automatically sorted when inserted Essence: set/multiset is an associative container, and the underlying structure is implemented with a binary tree The difference between set and multiset: set does not allow duplicate elements in the container multiset allows duplicate elements in the container 32.2set construction and […]
C++ – map and set (multimap and multiset)
Directory 1. Associative container 2. Key-value pairs 3. Associative container of tree structure 3.1 sets 3.1.1 Introduction to set 3.1.2 Use of set 3.2 multiset 3.2.1 Introduction to multiset 3.2.2 The use of multiset 3.3 maps 3.3.1 Introduction to map 3.3.2 Use of map 3.4 multimap 3.4.1 Introduction to multimap 3.4.2 Use of multimap 4. […]
[C++] Tree-type associative containers: set, map, multiset, multimap
Table of Contents 0. Overview 1. set 1.0 Template parameter description of set 1.1 Features of set usage 1.2 set usage 2. multiset 2.1 Features of using multiset 2.2 multiset usage 3. map 3.0 Template parameter description of map 3.1 Features of map usage 3.2 map usage 4. multimap 4.1 Features of using multimap 4.2 […]
C++–set/multiset re-understanding
Directory 1. Associative container 2. Key-value pairs 3. Associative container of tree structure 4. set container 4.1 Introduction to set 4.2 Use of set 5. multiset 5.1 Introduction to multiset 5.2 Use of mutisets 1. Associative container We have been exposed to some containers in STL before, such as: vector, list, deque, forward_list (C + […]
C++ set/multiset container
1. Concept set/multiset: All elements will be automatically sorted when inserted. When constructing a custom data type, a sorting rule needs to be specified. 2. Construction and assignment //traversal output void printSet(const set<int> & amp;s) { for (set<int>::iterator it = s.begin(); it != s.end(); it ++ ) { cout << *it << ” “; } […]
[C++] The use of collections (set and multiset) and the sorting of set custom types
1. Introduction to set In C++, both std::set and multiset are associative containers, and both are included in the header file #include < In set>, its underlying structure is implemented by binary tree, and the elements in this type of container will be automatically sorted when inserted. 2. set constructor Constructor prototype Explanation 1 setst […]
Let’s Make C++ Great Again – multiset and unordered_set
Article directory multiset head File Define and insert elements access element traverse elements delete element Here are some commonly used functions and usage: size() empty() custom sort remove all identical elements What is the difference between multisetand set? element uniqueness insert and delete look up unordered_set head File Define and insert elements access element traverse […]
set/multiset container
1. Introduction to set/multiset containers However, the set container only has key values, and it will be automatically sorted according to the key values when inserting data, so the same key values are not allowed to exist, and the element values of the set container cannot be modified, which will destroy the data structure of […]