二维数组初始化

@TOC二维数组初始化及输出

//二维数组动态初始化及输出

int[][] at=new int[2][];
at[0]=new int[2];
at[1]=new int[3];

at[0][0]=10;
at[0][1]=11;
at[1][0]=20;
at[1][1]=21;
at[1][2]=22;

int num=0;
while(num<at.length){
  for (int i = 0; i < at[num].length; i++) {
    System.out.print(at[num][i]+"   ");
  }
  System.out.println();
  num++;
}

//二维数组静态初始化及输出

int[][] arr = {{11,12},{21,22,23},{30,31,32,33}};

for (int[] is : arr) {
  for (int i = 0; i < is.length; i++) {
    System.out.print(is[i]+"   ");
  }
  System.out.println();
}