union find - OpenGenus IQ: Learn Algorithms, DL, System Design

Number of closed islands [2 solutions]

In this article, we have explored how to find the Number of closed islands in a graph. We have presented two approaches using the concept of BFS/ DFS and Union Find.

Algorithms

Longest Consecutive Subsequence [3 solutions]

In this article, we have solved the problem of Longest Consecutive Subsequence using the concept of Hash Map and Union Find.

Algorithms

Convert one string to another by changing all occurrence of a character to another

We will be solving Check if one string can be converted to another by changing all occurrence of a character to another character problem using the Union and Find algorithm.

Data Structures

Union Find (Disjoint Set)

A Union Find data structure (also called disjoint-set) is a data structure that keeps track of elements partitioned into a number of disjoint subsets. It provides near-constant-time operations to add new sets, to merge existing sets, and to determine whether elements are in the same set.