运行以下程序，输出的结果是（ ）。

int x(int arr[], int n)
{
int ans = 0;
for (int i = 0; i < n - 1; i++)
{
int m = i;
for (int j = i + 1; j < n; j++)
{
if (arr[j] < arr[m])
m = j;
}
if (m != i)
{
int temp = arr[i];
arr[i] = arr[m];
arr[m] = temp;
ans++;
}
}
return ans;
}
int main()
{
int arr[] = {64, 25, 12, 22, 11, 90, 34};
cout << x(arr, 7) << endl;
for(int i = 0; i < 7; i++)
cout << arr[i] << " ";
return 0;
}