主要内容

1、数组的概念

2、数组名、下标、元素、索引

3、二维数组

代码

import java.util.Arrays;
public class Longxi15 {

    public static void main(String[] args) {

        int[] a = {4, 5, 2, 1, 3, 9, 7, 6, 8};
        Arrays.sort(a);
        for (int i = 0; i < a.length; i++) {
            System.out.println(a[i]);
        }

        int[] x = {5, 4};
        int[] y = {1, 3, 2};
        int[][] b = new int[][]{x, y};
        System.out.println(Arrays.toString(x));
        String s1 = Arrays.deepToString(b);
        System.out.println(s1);

        int[] m = {1, 2, 3};
        int[] n = {1, 3, 2};
        int[][] d = new int[2][];
        d[0] = m.clone();
        d[1] = n.clone();
        int[][] c = new int[][]{m, n};
        Arrays.fill(n, 1);
        System.out.println(Arrays.deepToString(c));
        System.out.println(Arrays.deepToString(d));
        System.out.println(Arrays.equals(m, n));
        System.out.println(Arrays.deepEquals(c, d));


    }
}

运行截图

Java文件