I’m trying to create an adjacency list from an input of vertices, edges and single connections. The input looks like this: 3 2 (vertices, edges) 1 2 (connection) 1 3 Right now, my code is int vertices, edges; scanf("%d %d", &vertices, &edges); vector<int> storage[vertices+1]; for (int i = 0; i < edges; i++) { int ..

#### Category : adjacency-list

I did some debugging and found it’s the q.push_back(nbr) inside the while loop that’s causing the error , I can’t understand why the requested space is not being allocated. please help. Thank you . vector<int> bfs2(int V, vector<int> adj2[]) { int src = 0; bool visited[V]; for (int i = 0; i < V; i++) ..

#include <bits/stdc++.h> using namespace std; //This function does not work as i intended it to. It should add the node a to the list of b and vice versa(an undirected graph. void addNewEdge(vector<vector <int>> adjacencyList,int a,int b, vector<bool> isVisited){ adjacencyList[a].push_back(b); adjacencyList[b].push_back(a); isVisited[a] = false; isVisited[b] = false; } //the following function is meant to mark ..

I got this error no match for ‘operator=’ (operand types are ‘listNode’ and ‘listNode*’) in code G->adj[i]=(struct listNode *)malloc(sizeof(struct listNode)); I was representing graph data structure in the adjacency list. #include <iostream> using namespace std; struct listNode{ int value; struct lsitNode * next; }; struct Graph{ int V; int E; struct listNode *adj; }; struct ..

I need to draw a digraph having constant weights as edges , but the only issue is that the values are coming from an array I don’t know which one is connected to the other. Each weight can be used only once. The list is vi = { 45,28,20,38 } (vector integer) Source: Windows Questions ..

I am trying to create an adjacency list graph representation using a vector(V) of vectors(v). My goal is for every new vertex value entered, I increment the size of the V*, and insert the new value into the open spot, which would then be the starting value of v**. I then want to create an ..

I’m successfully using boost graph’s component finder to assign color, i.e. the component’s index to every vertex in my graph like so: #include <boost/graph/connected_components.hpp> #include <boost/graph/adjacency_list.hpp> boost::adjacency_list<boost::vecS, boost::listS, boost::undirectedS> g; std::vector<int> compon_map(boost::num_vertices(g)); int number_of_components = boost::connected_components(g, &compon_map[0]); This will then yield a different number_of_components after each iteration in my simulation (not shown) because I do ..

I’m trying to make an adjacency list graph implementation using vectors. In my vector declaration, I keep getting an error of "expression must have a constant value." I don’t understand why I get this error, as I thought that vectors were already dynamic arrays and this wouldn’t be a problem. int nodes = 5; vector<int> ..

#include<bits/stdc++.h> using namespace std; int main(){ int n,m; cin >> n>> m; vector<vector<int>> adj( 1001 , vector<int> (1001, 0)); for(int i=0;i<m;i++){ int a,b; cin>> a>>b; adj[a][b]=1; adj[b][a]=1; } int q; cin>>q; while(q–){ int a,b; cin>>a>>b; if(adj[a][b]==1) cout <<"YES" <<endl; else cout << "NO" <<endl; } } The 2-D vector part is giving segmentation fault.Even though ..

File test.txt 6 (This is the number of vertices) 1 4 (Еhe first is the number of the vertex, and the second is the number of the vertex to which the edge is being constructed. 1 6 2 1 2 3 2 4 2 5 3 2 3 5 4 1 4 2 4 5 ..

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