From 1e896864e1ea373a807fbeee5cfa299fa98fec0b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9B=B9=E6=AD=A3=E6=B3=A2?= <1938448998@qq.com>
Date: Wed, 7 Dec 2022 14:32:55 +0800
Subject: [PATCH 1/2] =?UTF-8?q?12=E6=9C=887=E6=97=A5=E4=BD=9C=E4=B8=9A?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../20221207 java\346\225\260\347\273\204.md" | 58 +++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100644 "09 \346\233\271\346\255\243\346\263\242/20221207 java\346\225\260\347\273\204.md"

diff --git "a/09 \346\233\271\346\255\243\346\263\242/20221207 java\346\225\260\347\273\204.md" "b/09 \346\233\271\346\255\243\346\263\242/20221207 java\346\225\260\347\273\204.md"
new file mode 100644
index 0000000..2f1b192
--- /dev/null
+++ "b/09 \346\233\271\346\255\243\346\263\242/20221207 java\346\225\260\347\273\204.md"	
@@ -0,0 +1,58 @@
+## 笔记
+
+### 数组定义格式
+
+int[] arr;
+
+int arr[];(推荐使用)
+
+数组需要初始化，才能用
+
+### 静态初始化
+
+数据类型【】 变量名=new 数据类型【】{元素1，元素2，元素3}
+
+简化：int【】 arr={元素1，元素2，元素3}
+
+数组元素访问
+
+sout (变量[])  (数组索引从零开始（例：元素1所以为0）)
+
+测量数组长度
+
+int num=a.length;
+
+### 动态初始化
+
+int [] arr=new int[数组长度]
+
+例：int[] n=new int[5];
+
+​        Scanner num=new Scanner(System.in);
+
+​        n[i]=num.nextInt();
+
+
+
+## 作业
+
+```java
+package 十二月七日;
+
+import java.util.Scanner;
+
+public class D1 {
+    public static void main(String[] args) {
+        int[] n=new int[5];
+        for(int i=0;i<5;i++){
+            Scanner num=new Scanner(System.in);
+            System.out.println("输入元素"+i);
+             n[i]=num.nextInt();
+        }
+        System.out.println("你输入的五个元素为：");
+        for (int j=0;j<5;j++){
+            System.out.print(n[j]+" ");
+        }
+    }
+}
+```
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-- 
Gitee


From b1720e876b7f56265b0be4df25a9c7f28a805f1c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9B=B9=E6=AD=A3=E6=B3=A2?= <1938448998@qq.com>
Date: Sun, 11 Dec 2022 18:38:42 +0800
Subject: [PATCH 2/2] =?UTF-8?q?12=E6=9C=889=E6=97=A5=E4=BD=9C=E4=B8=9A?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 ...15\344\271\240\346\225\260\347\273\204.md" | 78 +++++++++++++++++++
 1 file changed, 78 insertions(+)
 create mode 100644 "09 \346\233\271\346\255\243\346\263\242/20221209 java\345\244\215\344\271\240\346\225\260\347\273\204.md"

diff --git "a/09 \346\233\271\346\255\243\346\263\242/20221209 java\345\244\215\344\271\240\346\225\260\347\273\204.md" "b/09 \346\233\271\346\255\243\346\263\242/20221209 java\345\244\215\344\271\240\346\225\260\347\273\204.md"
new file mode 100644
index 0000000..427cdcb
--- /dev/null
+++ "b/09 \346\233\271\346\255\243\346\263\242/20221209 java\345\244\215\344\271\240\346\225\260\347\273\204.md"	
@@ -0,0 +1,78 @@
+## 笔记
+
+数组里通常用-1表示不存在的索引
+
+例：int x=-1；
+
+直接打印数组
+
+sout(Arrays.tosting(num))
+
+
+
+数组中等于号赋值是两个变量赋为相同一个值
+
+例： int[] a=b;
+
+​         for(){
+
+​           sout(a)
+
+​         }
+
+​         b=c (后面赋值也会影响前面变量)
+
+​         sout(a);
+
+​         sout(b);
+
+运行结果：b
+
+​                   c
+
+​                   c
+
+但这种情况只适用于数组数据类型的引用数据类型
+
+
+
+## 作业
+
+```java
+package 十二月九日;
+
+import java.util.Scanner;
+
+public class D1 {
+    public static void main(String[] args) {
+        double[] n=new double[6];
+        for(int i=0;i<n.length;i++){
+            Scanner num=new Scanner(System.in);
+            System.out.println("输入评委"+(i+1)+"的评分");
+            n[i]=num.nextInt();
+        }
+        //找最大值
+        double max=n[0];
+        for (int j=1;j<n.length;j++){
+            if (n[j]>max){
+                max=n[j];
+            }
+        }
+        //找最小值
+        double min=n[0];
+        for (int d=1;d<n.length;d++){
+            if (n[d]<min){
+                max=n[d];
+            }
+        }
+        //求数组n元素的总和
+        double he=0;
+        for (int f=0;f<n.length;f++){
+            he+=n[f];
+        }
+        //平均值
+        double pjz=(he-max-min)/(n.length-2);
+        System.out.println("平均分为："+pjz);
+    }
+}
+```
\ No newline at end of file
-- 
Gitee