?? 8q.c
字號(hào):
int up[15], down[15], rows[8], x[8];
int queens(), print();
main()
{
int i;
for (i = 0; i < 15; i++)
up[i] = down[i] = 1;
for (i = 0; i < 8; i++)
rows[i] = 1;
queens(0);
return 0;
}
queens(c)
{
int r;
for (r = 0; r < 8; r++)
if (rows[r] && up[r-c+7] && down[r+c]) {
rows[r] = up[r-c+7] = down[r+c] = 0;
x[c] = r;
if (c == 7)
print();
else
queens(c + 1);
rows[r] = up[r-c+7] = down[r+c] = 1;
}
}
print()
{
int k;
for (k = 0; k < 8; k++)
printf("%c ", x[k]+'1');
printf("\n");
}
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