静态初始化并赋值

 int[][] data = new int[][] { { 1, 2 }, { 2, 3 }, { 2, 3, 4 }, { 1, 2, 3, 4 } };print(data);

        int edges[][]={{0,1},{1,2},{1,3},{2,4},{3,4},{2,5}};

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);