算法训练 图形显示

import java.util.Scanner;

/*
 * 注意输入的数是否小于等于0。若是输出空格
 */

public class Main {

    public static void Print(int n){
        System.out.print("*");
        for ( int i = 1 ; i < n ; i++){
            System.out.print(" *");
        }
    }

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Scanner in = new Scanner(System.in);
        int N = in.nextInt();
        if(N <= 0){
            System.out.print(" ");
        }else{
            Print(N);
            for ( int i = N-1 ; i > 0 ; i--){
                System.out.println();
                Print(i);
            }
        }
        in.close();
    }

}