数组-02. 打印杨辉三角

import java.util.Scanner;public class Main {/** * 数组-02. 打印杨辉三角 */public static void main(String[] args) {Scanner s = new Scanner(System.in);int n = s.nextInt();int[][] nums = new int[n][];for (int i = 0; i < n; i++) {nums[i] = new int[i + 1];for (int j = 0; j < nums[i].length; j++) {if (j == 0 || j == nums[i].length - 1) {nums[i][j] = 1;} else {nums[i][j] = nums[i - 1][j - 1] + nums[i - 1][j];}}}for (int i = 0; i < nums.length; i++) {for (int k = nums.length - i - 1; k > 0; k--) {System.out.print(" ");}for (int j = 0; j < nums[i].length; j++) {System.out.printf("%4d", nums[i][j]);}System.out.println();}}}