Category : adjacency-list

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 ..

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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 ..

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#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 ..

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I’m trying to implement a graph using adjacency list, but in the A_List class function called ,,AddGraphEdge" , there’s a problem ,,Exception thrown: read access violation.this was 0x20." It occurs in the list.cpp function ,,AddEdge" when I do if(head==nullptr). I just simply check if head is null. When i delete this statement in place when ..

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beginner here, I was implementing an adjacency list to represent the graph in C++, I was stuck conceptually in the below code snippet. void addEdge(vector<int> adj[], int s, int d) { adj[s].push_back(d); adj[d].push_back(s); } vector<int> adj[] will contain list of all nodes My question is we have 1D vector adj[], how are we able to ..

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