From 9459651cab7dff9b17b61431c305c3c14cf8059c Mon Sep 17 00:00:00 2001
From: xuxin <840198532@qq.com>
Date: Mon, 5 Jan 2026 10:24:38 +0800
Subject: [PATCH] =?UTF-8?q?day08--Arrays=E5=B7=A5=E5=85=B7=E7=B1=BB?=
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---
 day08/src/com/inmind/arrays03/Demo12.java | 32 +++++++++++++++++++++++
 day08/src/com/inmind/arrays03/Demo13.java |  7 +++++
 2 files changed, 39 insertions(+)
 create mode 100644 day08/src/com/inmind/arrays03/Demo12.java
 create mode 100644 day08/src/com/inmind/arrays03/Demo13.java

diff --git a/day08/src/com/inmind/arrays03/Demo12.java b/day08/src/com/inmind/arrays03/Demo12.java
new file mode 100644
index 0000000..6e4d29e
--- /dev/null
+++ b/day08/src/com/inmind/arrays03/Demo12.java
@@ -0,0 +1,32 @@
+package com.inmind.arrays03;
+
+import java.util.Arrays;
+
+/*
+arrays类的2个工具类方法
+
+public static String toString(int[] a) ：返回指定数组内容的字符串表示形式。
+
+public static void sort(int[] a) ：对指定的 int 型数组按数字升序进行排序。
+ */
+public class Demo12 {
+    public static void main(String[] args) {
+        //定义一个整数数组
+        int[] arr = {1, 2, 3, 4};
+        System.out.println(arr);//[I@4eec7777
+        for (int i = 0; i < arr.length; i++) {
+            System.out.println(arr[i]);
+        }
+        System.out.println("---------------------------");
+        //查看某个数组的内容
+        /*String str = Arrays.toString(arr);
+        System.out.println(str);*/
+        System.out.println(Arrays.toString(arr));
+
+        System.out.println("------------------------");
+        int[] arr1 = {1, 44, 22, 56, 2, 5};
+        System.out.println(Arrays.toString(arr1));
+        Arrays.sort(arr1);//对原数组进行排序
+        System.out.println(Arrays.toString(arr1));
+    }
+}
diff --git a/day08/src/com/inmind/arrays03/Demo13.java b/day08/src/com/inmind/arrays03/Demo13.java
new file mode 100644
index 0000000..19e2d00
--- /dev/null
+++ b/day08/src/com/inmind/arrays03/Demo13.java
@@ -0,0 +1,7 @@
+package com.inmind.arrays03;
+/*
+Arrays练习：字符串倒序排列
+将一个随机字符串中的所有字符升序排列，并倒序打印。
+ */
+public class Demo13 {
+}