1、数组的定义
//定义一维数组 int[] num1 = {10, 20, 30}; //“int[] num1”等价“int num1[]”,推荐使用前者写法。 int[] num2 = new int[]{40, 50, 60}; int[] num3 = new int[3]; //定义二维数组 int[][] num4 = {{10, 20, 30}, {40, 50, 60}}; int[][] num5 = new int[][]{{10, 20, 30}, {40, 50, 60}}; int[][] num6 = new int[3][5]; //定义不规则数组 int[][] num7 = {{10, 20, 30}, {40}}; int[][] num9 = new int[3][]; num9[0] = new int[5]; num9[1] = new int[4]; num9[2] = new int[3];
2、数组填充
int[] num = new int[5]; Arrays.fill(num, 27);
执行结果如下图: