Detect cycle in undirected graph: method 1: Union FindThe time complexity of the union-find algorithm is O(ELogV).
int[][] edges = {{0, 1}, {1, 2}, {2, 0}}; boolean result = so.hasCycleDirectedGraph(3, edges); System.out.println(result); } } Detect Cycle in Undirected Graph 无向图找环 Given n nodes labeled from 0 to n - 1 and a list of undirected edges (each edge is a pair of n...
1.初始化。a)使用 HashMap 将图(graph)存储到邻接的列表中;b)为了查找所有源,使用 HashMap 记录 in-degree 的数量 2.构建图并找到所有顶点的 in-degree。a)根据输入构建图并填充 in-degree HashMap 3.寻找所有的源。a)所有 in-degree 为 0 的顶点都是源,并会被存入一个队列 4.排序。a)对于每个源,执...
Clone an undirected graph. Each node in the graph contains alabeland a list of itsneighbors. OJ's undirected graph serialization: Nodes are labeled uniquely. We use#as a separator for each node, and,as a separator for node label and each neighbor of the node. As an example, consider the...
Clone an undirected graph. Each node in the graph contains alabeland a list of itsneighbors. OJ's undirected graph serialization: Nodes are labeled uniquely. We use#as a separator for each node, and,as a separator for node label and each neighbor of the node. ...
Clone Graph Leetcode 127. Word Ladder Leetcode 490. The Maze Leetcode 323. Connected Component in Undirected Graph Leetcode 130. Surrounded Regions Leetcode 752. Open the Lock Leetcode 815. Bus Routes Leetcode 1091. Shortest Path in Binary Matrix Leetcode 542. 01 Matrix Leetcode 1293. ...
https://leetcode.com/problems/number-of-connected-components-in-an-undirected-graph/ 题目: Givennnodes labeled from0ton - 1and a list of undirected edges (each edge is a pair of nodes), write a function to find the number of connected components in an undirected graph. ...
Level 2 : custom Sort on pairs int32_tmain(){vector<pairs<int,int>>arr={{1,2},{2,2},{8,6},{1,4},{8,2},{3,7},{8,4}};autocmpFirst=[](pair<int,int>a,pair<int,int>b){returna.first<b.first;};autocmpSecond=[](pair<int,int>a,pair<int,int>b){returna.second<b....
0323 Number of Connected Components in an Undirected Graph 62.0% Medium 0324 Wiggle Sort II Go 32.9% Medium 0325 Maximum Size Subarray Sum Equals k 49.3% Medium 0326 Power of Three Go 45.2% Easy 0327 Count of Range Sum Go 36.0% Hard 0328 Odd Even Linked List Go 60.2% Medium 03...
323 Number of Connected Components in an Undirected Graph $ 43.30% Medium 322 Coin Change 24.90% Medium 321 Create Maximum Number 19.10% Hard 320 Generalized Abbreviation $ 40.40% Medium 319 Bulb Switcher 39.20% Medium 318 Maximum Product of Word Lengths 38.70% Medium 317 Shortest Distance from ...