蓝桥杯试题 基础练习 BASIC-6 杨辉三角形——冲刺蓝桥杯第五天

import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        sc.close();
        int[][] matrix = new int[n][n];
        for (int i = 0; i < n; i++) {
            matrix[i][0] = 1;
            matrix[i][i] = 1;
            for (int j = 2; j <= i; j++) {
                matrix[i][j - 1] = matrix[i - 1][j - 2] + matrix[i - 1][j - 1];
            }
        }
        for (int i = 0; i < n; i++) {
            for (int j = 0; j <= i; j++) {
                System.out.print(matrix[i][j] + " ");
            }
            System.out.println();
        }
    }
}