螺旋
import java.util.Scanner;
public class luo_xuan
{
public static void main(String[] args)
{
Scanner scanner = new Scanner(System.in);
System.out.println("请输入共有几阶螺旋:");
int n = scanner.nextInt();
int a[][]=new int[n][n];
int i=0,j=0,s=1,p=n,m=2,k=p,t=0;
for(;;j++)
{
if(k==0) break;
if(a[i][j]==0)
{
a[i][j]=s;
s++;
}
k--;
}
j--;
p--;
m=2;
k=p;
while(n!=1)
{
t=0;
for(i++;;i++)
{
if(k==0) break;
t=1;
if(a[i][j]==0)
{
a[i][j]=s;
s++;
}
k--;
}
if(t==1)
{
i--;
m--;
if(m==0)
