Java练习题01

问题：

利用二维非矩阵数组输出下面的数字

0

1 2

2 3 4

3 4 5 6

代码：

public
class Page98{

    public
static
void main(String args[]){

        int NumArray[][] = new
int [4][];

        NumArray[0]=new
int[]{0};

        NumArray[1]=new
int[]{1,2};

        NumArray[2]=new
int[]{2,3,4};

        NumArray[3]=new
int[]{3,4,5,6};

        

        for(int i = 0; i < NumArray.length; i++){

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

                System.out.print(" ");

                System.out.print(NumArray[i][j]);    

            }

            System.out.println(" ");

        }

    }

};