排序

void sort(int arr[], int len)
{
for (int i = 0; i < len - 1; i++)
{
int max = arr[i];
int maxIndex = i;
for (int j = i + 1; j < len; j++)
{
if (arr[j] > max)
{
max = arr[j];
maxIndex = j;
}
}
int temp = arr[i];
arr[i] = arr[maxIndex];
arr[maxIndex] = temp;
}
}