【二维数组 二维数组】

public class Test2DimensionArray {
    
    

    public static void main(String[] args) {
    
    

        int[][] a=new int [3][];

        a[0]=new int[]{
    
    20,30};
        a[1]=new int[]{
    
    10,15,52};
        a[2]=new int[]{
    
    50,63};

        System.out.println(a[1][2]);

        //静态初始化二维数组
        int[][] b={
    
    
                {
    
    20,30,40},
                {
    
    50,63},
                {
    
    30,52,60,1000}
        };

        System.out.println(b[2][3]);
    }
}