Associative Containers: std::set, std::multiset, std::map, and std::multimap0%

Unordered Containers: std::unordered_map and std::unordered_set (Hash Tables)

Associative Containers: std::set, std::multiset, std::map, and std::multimap

Intermediate14 min read•Updated: 2026-10-22

🌲 Associative Containers: std::map, std::set, and Multimaps

Introduction

Associative containers store elements ordered by keys. Under the hood, they are implemented as self-balancing binary search trees (specifically Red-Black Trees), guaranteeing strict O(log N) search, insertion, and deletion complexity.

🗺️ `std::map<Key, Value>` (Key-Value Dictionary)

Keys in an std::map are unique and maintained in ascending sorted order:

Visual Architecture & Process Flow

How data and code flow step-by-step

Flowchart

Step 1

// Map Course Code

Step 2

Course Fee

🎯 `std::set<Key>` (Unique Ordered Elements)

std::set stores unique keys with duplicate rejection:

1#include <iostream>
2#include <set>
3 
4int main() {
5    std::set<int> uniqueRollNumbers = {105, 101, 109, 101, 103, 105};
6 
7    std::cout << "Unique Sorted Roll Numbers: ";
8    for (int roll : uniqueRollNumbers) {
9        std::cout << roll << " "; // Output: 101 103 105 109 (Duplicates eliminated!)
10    }
11    std::cout << "\n";
12    return 0;
13}

🔄 Multimaps & Multisets

std::multimap: Permits multiple values mapped to the same key.
std::multiset: Permits duplicate keys while preserving sorted order.

Next Lesson

Unordered Containers: std::unordered_map and std::unordered_set (Hash Tables)

Continue learning with hands-on practice, examples, and exercises in the upcoming topic.

Related Lessons

Previous Lesson	Next Lesson
std::deque and std::list (Doubly-Linked Sequence)	Unordered Containers: std::unordered_map and std::unordered_set (Hash Tables)

Practice Quiz

Test your understanding of this lesson with 1 questions. Each question has one correct answer.

Previous Next

PreviousPrevNext

MSK Institute • Shikohabad

Loading Page Content...

Preparing courses, live labs, and learning resources.सामग्री लोड हो रही है, कृपया प्रतीक्षा करें...

Connecting serverPlease wait...

💻 Practical Labs🚀 Free Demo📜 Verified Certificates

Unordered Containers: std::unordered_map and std::unordered_set (Hash Tables)

Associative Containers: std::set, std::multiset, std::map, and std::multimap

Intermediate14 min read•Updated: 2026-10-22

Study Materials

🌲 Associative Containers: std::map, std::set, and Multimaps

Introduction

🗺️ `std::map<Key, Value>` (Key-Value Dictionary)

Keys in an std::map are unique and maintained in ascending sorted order:

Visual Architecture & Process Flow

How data and code flow step-by-step

Flowchart

Step 1

// Map Course Code

Step 2

Course Fee

🎯 `std::set<Key>` (Unique Ordered Elements)

std::set stores unique keys with duplicate rejection:

1#include <iostream>
2#include <set>
3 
4int main() {
5    std::set<int> uniqueRollNumbers = {105, 101, 109, 101, 103, 105};
6 
7    std::cout << "Unique Sorted Roll Numbers: ";
8    for (int roll : uniqueRollNumbers) {
9        std::cout << roll << " "; // Output: 101 103 105 109 (Duplicates eliminated!)
10    }
11    std::cout << "\n";
12    return 0;
13}

🔄 Multimaps & Multisets

std::multimap: Permits multiple values mapped to the same key.
std::multiset: Permits duplicate keys while preserving sorted order.

Next Lesson

Unordered Containers: std::unordered_map and std::unordered_set (Hash Tables)

Continue learning with hands-on practice, examples, and exercises in the upcoming topic.

Related Lessons

Previous Lesson	Next Lesson
std::deque and std::list (Doubly-Linked Sequence)	Unordered Containers: std::unordered_map and std::unordered_set (Hash Tables)

Practice Quiz

Test your understanding of this lesson with 1 questions. Each question has one correct answer.

Previous Next

🌲 Associative Containers: std::map, std::set, and Multimaps

Introduction

🗺️ std::map<Key, Value> (Key-Value Dictionary)

Visual Architecture & Process Flow

🎯 std::set<Key> (Unique Ordered Elements)

🔄 Multimaps & Multisets

Unordered Containers: std::unordered_map and std::unordered_set (Hash Tables)

Related Lessons

Practice Quiz

Loading Page Content...

🌲 Associative Containers: std::map, std::set, and Multimaps

Introduction

🗺️ std::map<Key, Value> (Key-Value Dictionary)

Visual Architecture & Process Flow

🎯 std::set<Key> (Unique Ordered Elements)

🔄 Multimaps & Multisets

Unordered Containers: std::unordered_map and std::unordered_set (Hash Tables)

Related Lessons

Practice Quiz

🗺️ `std::map<Key, Value>` (Key-Value Dictionary)

🎯 `std::set<Key>` (Unique Ordered Elements)

🗺️ `std::map<Key, Value>` (Key-Value Dictionary)

🎯 `std::set<Key>` (Unique Ordered Elements)