Java代码如何打印出杨辉三角呢？

实现思路:
    使用两个for循环即可打印出杨辉三角

package com.java265;
import java.util.Scanner;
/**
 * @author Darling
 * @create 2022-03-02-19:15
 */
public class Demo10 {

        public static void main(String[] args) {
            //对角线和每行首部 都为1
            Scanner in = new Scanner(System.in);
            int n = in.nextInt();
            int[][] a = new int [35][35];
            for (int i=1; i<=n; i++) {
                for(int j=1; j<=i; j++) {
                    if (j==1 || i==j) a[i][j]=1;
                    else a[i][j] = a[i-1][j-1] + a[i-1][j];
                    System.out.print(a[i][j]+" ");
                }
                System.out.println();
            }

        }
}