怎么用java输出等腰杨辉三角

下面是一个用Java输出等腰杨辉三角的示例代码：

import java.util.Scanner;public class YangHuiTriangle {    public static void main(String[] args) {        Scanner scanner = new Scanner(System.in);        System.out.print("请输入杨辉三角的行数：");        int numRows = scanner.nextInt();        int[][] triangle = new int[numRows][];        for (int i = 0; i < numRows; i++) {            triangle[i] = new int[i + 1];            triangle[i][0] = 1;            triangle[i][i] = 1;            for (int j = 1; j < i; j++) {                triangle[i][j] = triangle[i - 1][j - 1] + triangle[i - 1][j];            }        }        for (int i = 0; i < numRows; i++) {            for (int j = 0; j < numRows - i - 1; j++) {                System.out.print(" ");            }            for (int j = 0; j <= i; j++) {                System.out.print(triangle[i][j] + " ");            }            System.out.println();        }    }}

运行这个代码，输入要输出的杨辉三角的行数，程序会输出相应行数的等腰杨辉三角形状。