用java编写出杨辉三角形

以下是用Java编写的杨辉三角形代码：

import java.util.Scanner;

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

}

运行程序后，输入杨辉三角形的行数，程序会输出相应行数的杨辉三角形。例如，输入6，输出如下：

1 
1 1 
1 2 1 
1 3 3 1 
1 4 6 4 1 
1 5 10 10 5 1