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#include <stdio.h>
#define MAX 7
#define INF 100
void prim();
void kruskal();
int w[MAX][MAX] = {{0, 10, 15, 8, INF, INF, 27},
{10, 0, INF, 25, INF, INF, 4},
{15, INF, 0, 13, 32, 8, INF},
{8, 25, 13, 0, 19, 22, 10},
{INF, INF, 32, 19, 0, 15, INF},
{INF, INF, 8, 22, 15, 0, 25},
{27, 4, INF, 10, INF, 25, 0}};
char alph[MAX] = {'A', 'B', 'C', 'D', 'F', 'G', 'H'};
void main()
{
prim();
printf("\n");
kruskal();
}
void prim() {
int n, lnum;
int d[MAX];
int v[MAX];
int start[MAX];
int finish[MAX - 1];
int i, j, min, idx, tmp, sum;
n = MAX;
lnum = n - 1;
sum = 0;
for(i = 0; i < n; i++) {
d[i] = w[1][i];
v[i] = -1;
}
d[1] = -1;
idx = 1;
start[0] = 1;
for(i = 0; i < n - 1; i++) {
min = 999999;
for(tmp = 0; tmp < n; tmp++) {
if(d[tmp] != 0 && d[tmp] != -1 && d[tmp] != 100) {
if(tmp == 0) min = d[tmp];
else
if(min > d[tmp]) {
min = d[tmp];
}
}
}
for(j = 0; j < n; j++)
for(tmp = 0; tmp < n; tmp++)
if(d[j] == -1 && w[j][tmp] == min)
start[i+1] = j;
for(j = 0; j < n; j++) {
if(d[j] != -1 && min >= d[j]) {
min = d[j];
finish[i] = j;
v[idx] = j;
idx = j;
}
}
sum = sum + min;
d[idx] = -1;
v[i] = idx;
if(i == n - 2) break;
for(j = 0; j < n; j++) {
if(d[j] > w[idx][j]) {
d[j] = w[idx][j];
if(i+1 != n-1) start[i+1] = idx;
}
}
}
printf("result of prim algorism : ");
for(i = 0; i < n - 1; i++) {
printf("(%c, %c) ", alph[start[i]], alph[finish[i]]);
} printf(" ");
printf("Sum = %d ",sum);
}
void kruskal() {
int min, i, j, n, a, b, tmp, tmp2, cycle, sum;
int v[MAX];
n = MAX;
sum = 0;
printf("result of kruskal algorism : ");
for(i = 0; i < n; i++)
v[i] = 1;
for(tmp = 0; tmp < n-1;)
{
min = 999999;
cycle = 0;
for(i = 0; i < n; i++)
{
for(j = 0; j < n; j++)
{
if(w[i][j] != 0 && w[i][j] != -1 && w[i][j] != 100)
{
if(min > w[i][j])
{
min = w[i][j];
a = i;
b = j;
}
}
}
}
for(i = 0; i < n; i++)
{
if(w[a][i] == -1 && w[i][b] == -1)
{
w[a][b] = -1;
w[b][a] = -1;
}
}
if(v[a] == -1 && v[b] == -1)
for(i = 0; i < n; i++)
{
if(w[a][i] == -1 && w[i][b] == -1)
{
cycle = 1;
break;
}
}
if(cycle == 0)
{
printf("(%c, %c) ", alph[a], alph[b]);
v[a] = -1;
v[b] = -1;
w[a][b] = -1;
w[b][a] = -1;
sum = sum + min;
tmp++;
}
for(i = 0; i < n; i++)
{
for(j = 0; j < n; j++)
{
for(tmp2 = 0; tmp2 < n; tmp2++)
{
if(w[i][tmp2] == -1 && w[tmp2][j] == -1)
{
w[i][j] = -1;
w[j][i] = -1;
}
}
}
}
}
printf(", Sum = %d", sum);
}
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