编辑代码

package com;
import java.util.Scanner;
public class Main {
	public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println("请输入金字塔的层数：");
        int totalLevel =sc.nextInt();//改变数值就改变金字塔的层数
        for (int i = 1;i<=totalLevel;i++){
            for (int j=1;j<=2*(totalLevel-1)+1;j++){
                if(j>=totalLevel-i+1 && j<=totalLevel+i-1){
                    System.out.print("*");
                }else{
                 System.out.print(" ");
                }
            }
            System.out.println("");
        }
	}
}