int main(void)
{
int n = 10000000;
clock_t begin, end;
item_t *a = malloc(n * sizeof *a);
item_t *b = malloc(n * sizeof *b);
for_each(a, a + n, init);
memcpy(b, a, n * sizeof *a);
begin = clock();
mergesortBU(a, 0, n - 1);
end = clock();
printf("Bottom up cost: %.2f sec\n",
(double)(end - begin)/CLOCKS_PER_SEC);
begin = clock();
mergesortTD(b, 0, n - 1);
end = clock();
printf("Top down cost: %.2f sec\n",
(double)(end - begin)/CLOCKS_PER_SEC);
if (memcmp(a, b, n * sizeof *a) == 0) {
printf("Yes\n");
} else {
printf("No\n");
/*for_each(a, a + n, print); putchar('\n');*/
/*for_each(b, b + n, print); putchar('\n');*/
}
free(a);
free(b);
return 0;
}
main (int argc, char *argv[]) {
int i;
int array[] = {82, 49, 70, 83, 68, 44, 94, 40, 32, 10, 99, 59};
//don't forget to update LEN when this array is modified
if (argc == 1)
Mergesort(array, LEN);
else if (argv[1][1] == 'b')
mergesortBU(array, LEN);
else
printf("Illegal option.\n");
for (i = 0; i < LEN; i++)
printf("%d ", array[i]);
printf("\n");
return 0;
}