[LeetCode] 323. Number of Connected Components in an Undirected Graph

[LeetCode] 323. Number of Connected Components in an Undirected Graph

323. Number of Connected Components in an Undirected Graph Medium You have a graph of n nodes. You are given an integer n and an array edges where edges[i] = [ai, bi] indicates that there is an edge between ai and bi in the graph. Return the number of connected components in the graph. Example 1: Input: n = 5, edges = [[0,1],[1,2],[3,4]] Output: 2 Example 2: Input: n = 5, edges = [[0,1],[1,2],[2..