Detect cycle in undirected graph: method 1: Union FindThe time complexity of the union-find algorithm is O(ELogV).
publicclassSolution{publicstaticvoidmain(String[] args){Solutionso=newSolution();int[][] edges = {{0,1}, {1,2}, {2,0}};booleanresult=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...