Disjoint Set Union Explained | Union-Find Data Structure in C++
Автор: Start Coding Today
Загружено: 2026-01-27
Просмотров: 23
Описание:
In this video, we explain the Disjoint Set Union (DSU) data structure in a simple and intuitive way. You will understand how DSU efficiently manages groups, why it is extremely fast, and how its two key optimizations make it one of the most powerful tools in computer science.
This topic is essential for Data Structures and Algorithms, competitive programming, and graph-based problems.
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0:00 Introduction to Disjoint Set Union
0:21 Real-world problem motivation
0:45 What are disjoint sets
1:26 Core operations find and union
1:52 Naive implementation and its problem
2:40 Path compression explained
3:24 Union by rank explained
4:03 DSU implementation idea
4:30 Time complexity O alpha n
5:11 Applications of DSU
5:33 Best practices and summary
What You Will Learn
What Disjoint Set Union is
Why DSU is used in large networks
Find and Union operations
Path compression technique
Union by rank optimization
Why DSU is almost constant time
Real-world and algorithmic applications of DSU
Hashtags
#DisjointSetUnion
#DSU
#DataStructures
#Algorithms
#GraphAlgorithms
#CompetitiveProgramming
#ComputerScience
#Cplusplus
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