HDOJ(HDU) 2153 仙人球的残影(谜一样的题、、、)

import java.util.Scanner;

public class Main{
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		while(sc.hasNext()){
			int n =sc.nextInt();
			if(n<=0){
				break;
			}
			if(n==1){
				System.out.println("  1");
				continue;
			}
			//上面的数字
			int up[] = new int[n];
			//下面的数字
			int down[] = new int[n];
			//右边的数字
			int right[] = new int[n-2];
			//左边的数字
			int left[] = new int[n-2];
			int t=1;
			for(int i=0;i<n;i++){
				up[i]=t;
				t++;
			}
			for(int i=0;i<n-2;i++){
				right[i]=t;
				t++;
			}
			for(int i=0;i<n;i++){
				down[i]=t;
				t++;
			}
			for(int i=0;i<n-2;i++){
				left[i]=t;
				t++;
			}
			int r=0;
			int f=n-3;
			for(int i=0;i<n;i++){
				
				for(int j=0;j<n;j++){
					if(i==0){
						System.out.printf("%3d",up[j]);
					}else if(i==n-1){
						System.out.printf("%3d",down[n-1-j]);
					}else{
						if(j==0){
							System.out.printf("%3d",left[f]);
							f--;
						}else if(j==n-1){
							System.out.printf("%3d",right[r]);
							r++;
						}else{
							System.out.print("   ");
						}
					}
				}
				System.out.println();
			}
		}
	}
}