Java_用数组保存并显示杨辉三角

import java.util.Scanner;

public class Yang_Hui_Triangle {
    public static void main(String[] args) {
        System.out.println("请输入您要打印杨辉三角的行数：");
        Scanner myScanner = new Scanner(System.in);
        int N = myScanner.nextInt();
        int [][] yangHui = new int[N][];
        System.out.println("yangHui.length = " + yangHui.length);

        for(int i = 0; i < yangHui.length; i++){
            yangHui[i] = new int[i + 1];
//            System.out.println("yangHui["+ i +"].length = " + yangHui[i].length);

            for(int j = 0; j < yangHui[i].length; j++){

                if((j == 0) || (j == i) || i <= 1){
                    yangHui[i][j] = 1;
                }else if(i > 1){
                    yangHui[i][j] = yangHui[i - 1][j - 1] + yangHui[i - 1][j];
                }
//                System.out.print(yangHui[i][j] + "\t");
            }
        }

        for(int k = 0;k < N; k++){
            System.out.print("==\t");
        }
        System.out.println();
        for(int i = 0; i < yangHui.length; i++){
            for(int j = 0; j < yangHui[i].length; j++){
                System.out.print(yangHui[i][j] + "\t");
            }
            System.out.println();
            }

        for(int k = 0;k < N; k++){
            System.out.print("==\t");
        }
        System.out.println();

    }
}