java-杨辉三角（代码）

import java.util.Arrays;
import java.util.Scanner;

// 杨辉三角打印（输入行数，输出杨辉三角）
public class Work15_3_14 {

public static void main(String[] args) {
    Scanner scanner = new Scanner(System.in);
    int input = scanner.nextInt();
    for (int [] date :yang_Hui_Triangle(input)
         ) {
        System.out.println(Arrays.toString(date));
    }
    print(yang_Hui_Triangle(input));
}


public static int[][] yang_Hui_Triangle(int num){
    int [][] list = new int[num][num];
    list [0][0] = 1;
    for (int i = 0; i < num; i++) {
        list [i][0] = 1;
        for (int j = 1; j < i; j++) {
            list[i][j] = list[i-1][j-1]+list[i-1][j];
        }
        list [i][i] = 1;
    }
   return list;
}


public static void print(int [][] list){
    // 控制每一行
    for (int i = 0; i < list.length; i++) {
        // 前面补空格
        for (int j = 0; j < list.length-1-i; j++) {
            System.out.print("  ");
        }
        // 控制每一列
        for (int j = 0; j <= i; j++) {
            System.out.print(" ");
            System.out.printf("%-3d",list[i][j]);
            }
        System.out.println();
        }
    }


}