CodingHardcod-g240

Subject Bridges articulationLevel Senior–Staff~40 minCommon in Algorithms & data structures interviewsIndustries Software development

Question

Given an undirected graph with n nodes (0..n-1) and edges [u, v], a 2-edge-connected component is a maximal set of nodes that stays connected after the removal of any single edge. Equivalently, delete all bridges and count the resulting connected components. Return that count. Parallel edges may appear. Constraints: 1 <= n <= 2000.

Implement

count_2edge_components(n: int, edges: list[list[int]]) → int

Examples

in[4,[[0,1],[1,2],[2,3]]]out4

What a strong answer looks like

State your approach and its time/space complexity out loud before you optimize. Handle the edge cases (empty input, duplicates, overflow), and say why you chose this over the brute force. Green tests are the floor, not the grade.

Learn the concepts

Vibe coding: describe the solution in plain language (or narrate it) and the coach grades your approach. Generating runnable code from your description is coming next.

Run or narrate your approach, then ask the coach.