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Grokking the Coding Interview Patterns in C++

Redundant Connection

Explore how to solve the Redundant Connection problem by applying the union find data structure to detect and remove cycles in an undirected graph. Understand the problem constraints, analyze graph connectivity, and implement an efficient solution to make the graph a cycle-free tree.

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Statement

We’re given an undirected graph consisting of nn nodes. The graph is represented as an array called edges, of length nn, 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 treeA tree is an undirected graph that is connected and has no cycles. of nn ...