Solution: Redundant Connection
Explore how to apply the union-find pattern to find and remove a redundant connection in an undirected graph. Understand the implementation of union by rank and path compression to efficiently detect cycles, enabling you to return the edge that completes a cycle in the graph. This lesson helps you build and optimize a solution with O(n) time complexity for practical graph problems.
Statement
We’re given an undirected graph consisting of nodes. The graph is represented as an array called edges, of length , where edges[i] = [a, b] indicates that there is an edge between nodes a and b in the graph.
Return an edge that can be removed to make the graph a edges.
Constraints:
edges.length