Leetcode Problem 2039. The Time When the Network Becomes Idle

2039. The Time When the Network Becomes Idle

Leetcode Solutions

BFS for Shortest Path and Mathematical Calculation of Idle Time

  1. Create an adjacency list from the given edges list.
  2. Perform BFS from the master server (node 0) to calculate the shortest path to each server.
  3. Initialize a variable maxIdleTime to keep track of the maximum time at which the network becomes idle.
  4. Iterate over each server (excluding the master server): a. Calculate the round-trip time as 2 * shortestPath[server]. b. Determine the number of times the server will resend the message before the first reply arrives. c. Calculate the last time a message is sent from the server. d. Update maxIdleTime with the maximum of its current value and the time at which the last reply is received.
  5. Return maxIdleTime + 1 as the network becomes idle one second after the last message is received.
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Dijkstra's Algorithm for Shortest Path and Idle Time Calculation

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