Grokking Graph Algorithms for Coding Interviews
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Critical Connections in a Network (hard)
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Problem Statement

You are given n servers numbered from 0 to n-1, connected by some number of undirected connections where connections[i] = [ai, bi] represents a connection between servers ai and bi. Any server can reach other servers directly or indirectly through the network.

A critical connection is a connection that, if removed, will make some servers unable to reach some other servers.

Return all critical connections in the network.

Examples

Example 1:

  • Input: n = 5, connections = [[0, 1], [1, 2], [2, 3], [3, 4], [2, 4]]
  • Expected Output:

.....

.....

.....

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