用星號*輸出金字塔圖案

import java.util.Scanner;

public class jinzita {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.print("請輸入金字塔的層數：");
int n;
n = input.nextInt();

for(int i=1;i<=n;i++){
for(int j=1;j<=n-i;j++){
System.out.print(" ");
}
for(int k=1;k<=2*i-1;k++){
System.out.print("*");
}
System.out.println();
}
}
}