Created
April 3, 2019 06:49
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C implementation of Floyd Warshall Algorithm
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#include<stdio.h> | |
int N, M[10][10]; | |
int min(int a,int b) | |
{ | |
if(a<b) | |
return a; | |
else | |
return b; | |
} | |
void floydWarshallAlgo() | |
{ | |
int k,i,j; | |
for(k=0; k<N; k++) | |
{ | |
printf("\n D[%d] matrix is :\n",k); | |
for(i=0;i<N;i++) | |
{ | |
for(j=0;j<N;j++) | |
if(M[i][j]>= 32760)//32760 since some bug occured at 32765 | |
printf(" [INF] "); | |
else | |
printf(" [%d] ",M[i][j]); | |
printf("\n"); | |
} | |
for(i=0; i<N;i++) | |
{ | |
for(j=0; j<N; j++) | |
{ | |
M[i][j]=min(M[i][j],M[i][k]+M[k][j]); | |
} | |
} | |
} | |
printf("\n Final D[%d] matrix is :\n",N); | |
for(i=0;i<N;i++) | |
{ | |
for(j=0;j<N;j++) | |
if(M[i][j]>= 32760) | |
printf(" [INF] "); | |
else | |
printf(" [%d] ",M[i][j]); | |
printf("\n"); | |
} | |
} | |
int main() | |
{ | |
int i,j; | |
printf("\nEnter the size of the matrix : "); | |
scanf("%d",&N); | |
printf("Enter the matrix of the size %d (Enter 32767 for infinity):\n",N); | |
for(i=0;i<N;i++) | |
for(j=0;j<N;j++) | |
scanf("%d",&M[i][j]); | |
floydWarshallAlgo(); //passing original matrix and the size | |
return 0; | |
} |
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