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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3.  
  4. // Function to add an edge to the graph
  5. void addEdge(vector<vector<int>> &adjList, int u, int v) {
  6.     adjList[u].push_back(v); // Add v to u's list
  7.     adjList[v].push_back(u); // Add u to v's list (for an undirected graph)
  8. }
  9.  
  10. // Function to print the adjacency list representation of the graph
  11. void printGraph(const vector<vector<int>> &adjList) {
  12.     for (int i = 0; i < adjList.size(); i++) {
  13.         cout << "Vertex " << i << ":";
  14.         for (int j : adjList[i]) {
  15.             cout << " -> " << j;
  16.         }
  17.         cout << endl;
  18.     }
  19. }
  20.  
  21. int main() {
  22.     int numVertices = 5; // Number of vertices in the graph
  23.  
  24.     // Create an adjacency list
  25.     vector<vector<int>> adjList(numVertices);
  26.  
  27.     // Add edges
  28.     addEdge(adjList, 0, 1);
  29.     addEdge(adjList, 0, 4);
  30.     addEdge(adjList, 1, 2);
  31.     addEdge(adjList, 1, 3);
  32.     addEdge(adjList, 1, 4);
  33.     addEdge(adjList, 2, 3);
  34.     addEdge(adjList, 3, 4);
  35.  
  36.     // Print the adjacency list
  37.     printGraph(adjList);
  38.  
  39.     return 0;
  40. }
  41.  
Success #stdin #stdout 0s 5284KB
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Standard input is empty
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Vertex 0: -> 1 -> 4
Vertex 1: -> 0 -> 2 -> 3 -> 4
Vertex 2: -> 1 -> 3
Vertex 3: -> 1 -> 2 -> 4
Vertex 4: -> 0 -> 1 -> 3
https://ideone.com/rfzuy6
Adjacency List code
language:
C++14 (gcc 8.3)
created:
14 hours ago
visibility:
public

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