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dijkstra in c++
Light Lyrebird
on Jul 01, 2020
void dijkstra(int s) {
priority_queue<pair<int, int>, vector<pair<int, int> >, greater<pair<int, int> > > pq;
for (int i=0; i<N; i++) dist[i] = INF;
dist[s] = 0;
pq.push(make_pair(0, s));
while (!pq.empty()) {
pair<int, int> front = pq.top();
pq.pop();
int w = front.first, u = front.second;
if (w > dist[u]) continue;
for (int i=0; i<adj[u].size(); i++) {
pair<int, int> v = adj[u][i];
if (dist[v.first] > dist[u] + v.second) {
dist[v.first] = dist[u] + v.second;
pq.push(make_pair(dist[v.first], v.first));
}
}
}
}dijkstra algorithm c++
Bloody Buzzard
on Aug 29, 2020
#include<bits/stdc++.h>
using namespace std;
int main()
{
int n = 9;
int mat[9][9] = { { 100,4,100,100,100,100,100,8,100},
{ 4,100,8,100,100,100,100,11,100},
{100,8,100,7,100,4,100,100,2},
{100,100,7,100,9,14,100,100,100},
{100,100,100,9,100,100,100,100,100},
{100,100,4,14,10,100,2,100,100},
{100,100,100,100,100,2,100,1,6},
{8,11,100,100,100,100,1,100,7},
{100,100,2,100,100,100,6,7,100}};
int src = 0;
int count = 1;
int path[n];
for(int i=0;i<n;i++)
path[i] = mat[src][i];
int visited[n] = {0};
visited[src] = 1;
while(count<n)
{
int minNode;
int minVal = 100;
for(int i=0;i<n;i++)
if(visited[i] == 0 && path[i]<minVal)
{
minVal = path[i];
minNode = i;
}
visited[minNode] = 1;
for(int i=0;i<n;i++)
if(visited[i] == 0)
path[i] = min(path[i],minVal+mat[minNode][i]);
count++;
}
path[src] = 0;
for(int i=0;i<n;i++)
cout<<src<<" -> "<<path[i]<<endl;
return(0);
}All those coders who are working on the C++ based application and are stuck on dijkstra in c++ can get a collection of related answers to their query. Programmers need to enter their query on dijkstra in c++ related to C++ code and they'll get their ambiguities clear immediately. On our webpage, there are tutorials about dijkstra in c++ for the programmers working on C++ code while coding their module. Coders are also allowed to rectify already present answers of dijkstra in c++ while working on the C++ language code. Developers can add up suggestions if they deem fit any other answer relating to "dijkstra in c++". Visit this developer's friendly online web community, CodeProZone, and get your queries like dijkstra in c++ resolved professionally and stay updated to the latest C++ updates.
