杨辉三角（java实现）

Posted 2020-11-03 龙谷情

 1 package lizi;
 2 import java.util.Scanner;
 3 public class Yanghui {
 4     private static Scanner input;
 5     public static void main(String[] args) {
 6         test_YH();
 7     }
 8     public static void test_YH() {
 9         System.out.print("请输入行数：");
10         input = new Scanner(System.in);
11         int row = input.nextInt();
12         int col = row;
13         int[][] array = new int[row][col];
14 
15         for (int i = 1; i < row; i++) {
16             for (int j = row; j > i; j--) {
17                 System.out.print("  ");
18             }
19             for (int j = 1; j <= i; j++) {
20                 if (i == j || j == 0) {
21                     array[i][j] = 1;
22                 } else {
23                     array[i][j] = array[i - 1][j - 1] + array[i - 1][j];
24                 }
25                 System.out.print(array[i][j] + "   ");
26             }
27             System.out.println();
28         }
29     }
30 }