打印不规则二维数组

public class ArrayTest{public static void main(String[] args){int[][] a = new int[][]{ {1,2,3}, {4}, {5,6,7,8} };//System.out.println(a.length);for(int i = 0; i < a.length; i++)//a.length表示数组长度(共几行){for(int j = 0; j < a[i].length; j++)//a[i].length表示第i行数组的列数{System.out.print(a[i][j] + " ");}System.out.println();}}}