数组是每个编程语言的最常用的数据结构之一，二维数组应用场景比较广泛，其赋值方式比普通的数组要复杂一些。
静态初始化并赋值//二维数组 静态初始化 ???????int[][] data = new int[][] { { 1, 2 }, { 2, 3 }, { 2, 3, 4 }, { 1, 2, 3, 4 } }; ???????print(data); 动态赋值 //动态赋值 ???????int[][] data2 = new int[3][2]; ???????for (int i = 0; i < data2.length; i++) { ???????????for (int j = 0; j < data2[i].length; j++) { ???????????????data2[i][j] = i * j; ???????????} ???????} ???????print(data2); 动态列赋值 //动态列 ???????int[][] data1 = new int[3][]; ???????for (int i = 0; i < data1.length; i++) { ???????????data1[i] = new int[i + 1]; ???????????for (int j = 0; j < data1[i].length; j++) { ???????????????data1[i][j] = i * j; ???????????} ???????} ???????print(data1); 遍历 private void print(int[][] data) { ???????System.out.println("----------------------------------------------------"); ???????for (int i = 0; i < data.length; i++) { ???????????for (int j = 0; j < data[i].length; j++) { ???????????????System.out.println(String.format("data[%s][%s] = %s", i, j, data[i][j])); ???????????} ???????} ???}