Code RoomCount bridges
HardPrep Room Coding #1264

Count bridges

CodingAlgorithms & data structuresSenior~35 min

An undirected connected-or-not graph on n nodes (0..n-1) is given by an edge list (no multi-edges). A bridge is an edge whose removal increases the number of connected components. Return the number of bridges. Constraints: 1 <= n <= 10^5; the edge list has no duplicate edges and no self-loops.

Implement
count_bridges(n: int, edges: list[list[int]]) → int
Examples
in[5,[[0,1],[1,2],[2,0],[2,3],[3,4]]]out2
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.

0:00 of about 35 min
InputExpectedGot
[5,[[0,1],[1,2],[2,0],[2,3],[3,4]]]2not run yetsample