倒金字塔

package kaoshi;

import java.util.Scanner;

public class Test1 {
	public static void main(String[] args) {
		 Scanner scanner=new Scanner(System.in);
		 System.out.println("请输入一个整数");
		 int a=scanner.nextInt();
		 abo(a);
	}
	public static void abo(int a){
		for(int i=1;i<=a;i++){
			for(int j=1;j<=i;j++){
				System.out.print(" ");
			}
			for(int k=1;k<=2*(a-i)+1;k++){
				System.out.print("*");
			}
			System.out.println();
		}
	}