怎么用java输出等腰杨辉三角

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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();}
    }
}