dij.c
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2 years ago
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#include<stdio.h>
#include<limits.h>
#include<stdbool.h>
#define V 9
int mindist(int dist[],bool spt[])
{
int min_dist = INT_MAX,min_index;
for(int v=0;v<V;v++)
{
if(spt[v]==false && dist[v]<=min_dist)
{
min_dist=dist[v],min_index=v;;
}
}
return min_index;
}
void dijk(int graph[V][V],int src)
{
int dist[V],count,v,i;
bool spt[V];
for(i=0;i<V;i++)
{
dist[i]=INT_MAX;
spt[i]=false;
}
dist[src]=0;
for(count=0;count<V-1;count++)
{
int u = mindist(dist,spt);
spt[u] = true;
for(v=0;v<V;v++)
{
if(!spt[v] && graph[u][v] && dist[u]!=INT_MAX && (dist[u]+graph[u][v])<dist[v])
{
dist[v]=dist[u]+graph[u][v];
}
}
}
for(i=0;i<V;i++)
{
printf("%d\n",dist[i]);
}
}
int main()
{
int graph[V][V] = { { 0, 4, 0, 0, 0, 0, 0, 8, 0 },
{ 4, 0, 8, 0, 0, 0, 0, 11, 0 },
{ 0, 8, 0, 7, 0, 4, 0, 0, 2 },
{ 0, 0, 7, 0, 9, 14, 0, 0, 0 },
{ 0, 0, 0, 9, 0, 10, 0, 0, 0 },
{ 0, 0, 4, 14, 10, 0, 2, 0, 0 },
{ 0, 0, 0, 0, 0, 2, 0, 1, 6 },
{ 8, 11, 0, 0, 0, 0, 1, 0, 7 },
{ 0, 0, 2, 0, 0, 0, 6, 7, 0 } };
dijk(graph,0);
return 0;
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