package mytest;

import java.util.Scanner;

public class Example {

public static void main(String[] args) {

System.out.print("請輸入楊輝三角形的行數：");

Scanner scanner = new Scanner(System.in);

int rows = scanner.nextInt();

//設定楊輝三角的行數

//int rows = 10;

for(int i =0;i<rows;i++) {

int number = 1;

//列印空格字串

System.out.format("%"+(rows-i)*2+"s","");

for(int j=0;j<=i;j++) {

System.out.format("%4d",number);

number = number * (i - j) / (j + 1);

}

System.out.println();

}

}

}