Understanding cycle detection in an undirected graph

Graphs are composed of nodes connected via edges and are not restricted by any specific topology. Unlike a tree, which is a specialised graph as it is acyclic, a general graph can have cycles. A cycle in a graph is a path that starts and ends at the same node, has no repeated edges, and has at least three nodes. In this lesson, we will look at cycles in undirected graphs and learn the algorithm that can be used to detect such cycles.

Algorithm