linux命令-mkdir

public static void ShellSort(int[] arr)
{
int t;
int j;
int step = arr.length / 2;
while(step >= 1)
{
for(int i = step; i < arr.length; i++)
{
if(arr[i] < arr[i - step])
{
t = arr[i];
for(j = i - step; j >= 0 && arr[j] > t; j -= step)
{
arr[j + step] = arr[j];
}
arr[j + step] = t;
}
}
step /= 2;
}
}