# Python Program for union-find algorithm to detect cycle in a undirected graph # we have one egde for any two vertex i.e 1-2 is either 1-2 or 2-1 but not both from collections import defaultdict # This class represents a undirected graph using adjacency list representation class Graph:...
1740.Find-Distance-in-a-Binary-Tree (H) 2096.Step-By-Step-Directions-From-a-Binary-Tree-Node-to-Another (M+) 2509.Cycle-Length-Queries-in-a-Tree (M) N-ary Tree 428.Serialize-and-Deserialize-N-ary-Tree (H) 431.Encode-N-ary-Tree-to-Binary-Tree (H-) 1516.Move-Sub-Tree-of-N-Ar...
This is crucial in various applications to prevent infinite loops or unintended behavior. Techniques like depth-first or breadth-first search can detect cycles by keeping track of visited vertices and identifying back edges during traversal. 4. Topological Sorting Topological sorting is a graph algorit...
Given a connected, undirected graph with weighted edges, the objective is to find a spanning tree with the minimum total edge weight. A spanning tree connects all vertices using only n−1 edges without forming any cycle.Working of Prim’s Minimal Spanning Tree Algorithm:...
Check if adding this edge will form a cycle in the selected vertices. If it doesn’t, add the edge to the spanning tree. Add the vertex at the other end of the chosen edge to the set of selected vertices. Update the priority queue with all the edges connected to the newly added vert...
It focuses on the work of using the hidden Markov model to detect DDoS attacks. The Renyi entropies of the destination and source IP addresses of the network traffic are chosen as features adopted in detection. The Baum–Welch algorithm is employed to train the Markov model. After that, the...
1740.Find-Distance-in-a-Binary-Tree (H) 2096.Step-By-Step-Directions-From-a-Binary-Tree-Node-to-Another (M+) 2509.Cycle-Length-Queries-in-a-Tree (M) N-ary Tree 428.Serialize-and-Deserialize-N-ary-Tree (H) 431.Encode-N-ary-Tree-to-Binary-Tree (H-) 1516.Move-Sub-Tree-of-N-Ar...
Detect Cycle in a Linked List #141 🐰&🐢 ❓: Given head, the head of a linked list, determine if the linked list has a cycle in it. There is a cycle in a linked list if there is some node in the list that can be reached again by continuously following the next pointer. Int...
520 Detect Capital Python O(l) O(1) Easy OK 521 Longest Uncommon Subsequence I Python O(min(a, b)) O(1) Easy OK* 522 Longest Uncommon Subsequence II Python O(l * n^2) O(1) Medium Sort AGAIN (not start) 524 Longest Word in Dictionary through Deleting Python O((d * l) * log...
How to compute the shortest path between two nodes in an unweighted graph How to detect a cycle in a directed graph How to detect a cycle in an undirected graph How to name a graph with directed edges and without cycle How to name a graph with few edges and with many edges How to na...