java.lang.Object
g0901_1000.s0928_minimize_malware_spread_ii.Solution

public class Solution extends java.lang.Object
928 - Minimize Malware Spread II.

Hard

You are given a network of n nodes represented as an n x n adjacency matrix graph, where the ith node is directly connected to the jth node if graph[i][j] == 1.

Some nodes initial are initially infected by malware. Whenever two nodes are directly connected, and at least one of those two nodes is infected by malware, both nodes will be infected by malware. This spread of malware will continue until no more nodes can be infected in this manner.

Suppose M(initial) is the final number of nodes infected with malware in the entire network after the spread of malware stops.

We will remove exactly one node from initial, completely removing it and any connections from this node to any other node.

Return the node that, if removed, would minimize M(initial). If multiple nodes could be removed to minimize M(initial), return such a node with the smallest index.

Example 1:

Input: graph = [[1,1,0],[1,1,0],[0,0,1]], initial = [0,1]

Output: 0

Example 2:

Input: graph = [[1,1,0],[1,1,1],[0,1,1]], initial = [0,1]

Output: 1

Example 3:

Input: graph = [[1,1,0,0],[1,1,1,0],[0,1,1,1],[0,0,1,1]], initial = [0,1]

Output: 1

Constraints:

  • n == graph.length
  • n == graph[i].length
  • 2 <= n <= 300
  • graph[i][j] is 0 or 1.
  • graph[i][j] == graph[j][i]
  • graph[i][i] == 1
  • 1 <= initial.length < n
  • 0 <= initial[i] <= n - 1
  • All the integers in initial are unique.
  • Constructor Summary Link icon

    Constructors
    Constructor
    Description
     
  • Method Summary Link icon

    Modifier and Type
    Method
    Description
    int
    minMalwareSpread(int[][] graph, int[] initial)
     

    Methods inherited from class java.lang.Object Link icon

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
  • Constructor Details Link icon

    • Solution Link icon

      public Solution()
  • Method Details Link icon

    • minMalwareSpread Link icon

      public int minMalwareSpread(int[][] graph, int[] initial)