/* 程序段A */
# define MAXN 10
int i, high, low, n, temp;
int num[MAXN];
scanf("%d", &n);
for(i = 0; i < n; i++){
scanf("%d", &num[i]);
}
_____________________
while(______________________)
{
temp = num[high];
num[high] = num[low];
num[low] = temp;
_____________________
}
for(i = 0; i < n; i++) {
printf("%d ", num[i]);
}
printf("\n");
/* 程序段B */
# define MAXN 10
int i, n, temp;
int num[MAXN];
scanf("%d", &n);
for(i = 0; i < n; i++)
scanf("%d", &num[i]);
for_____________________
{
_____________________
}
for(i = 0; i < n; i++) {
printf("%d ", num[i]);
}
printf("\n");