diff --git "a/05\350\260\242\351\223\226\346\265\251/1126 \350\260\242\351\223\226\346\265\251.md" "b/05 \350\260\242\351\223\226\346\265\251/1126 \350\260\242\351\223\226\346\265\251.md"
similarity index 100%
rename from "05\350\260\242\351\223\226\346\265\251/1126 \350\260\242\351\223\226\346\265\251.md"
rename to "05 \350\260\242\351\223\226\346\265\251/1126 \350\260\242\351\223\226\346\265\251.md"
diff --git "a/05\350\260\242\351\223\226\346\265\251/20221129 \350\260\242\351\223\226\346\265\251.md" "b/05 \350\260\242\351\223\226\346\265\251/20221129 \350\260\242\351\223\226\346\265\251.md"
similarity index 100%
rename from "05\350\260\242\351\223\226\346\265\251/20221129 \350\260\242\351\223\226\346\265\251.md"
rename to "05 \350\260\242\351\223\226\346\265\251/20221129 \350\260\242\351\223\226\346\265\251.md"
diff --git "a/05 \350\260\242\351\223\226\346\265\251/20221202 if\345\222\214switch.md" "b/05 \350\260\242\351\223\226\346\265\251/20221202 if\345\222\214switch.md"
new file mode 100644
index 0000000000000000000000000000000000000000..f08f6aecd0d1b490447d5776229656b02eb2c2db
--- /dev/null
+++ "b/05 \350\260\242\351\223\226\346\265\251/20221202 if\345\222\214switch.md"	
@@ -0,0 +1,121 @@
+```java
+import java.util.Scanner;
+
+public class dd1 {
+    public static void main(String[] args) {
+        Scanner sc=new Scanner(System.in);
+        System.out.println("请输入车型");
+        String cx= sc.next();
+        Scanner km=new Scanner(System.in);
+        System.out.println("请输入公里");
+        int gl= km.nextInt();
+        if (gl>3) {
+            switch (cx) {
+                case "夏利":
+                    System.out.println((gl - 3) * 2.1 + 3);
+                    break;
+                case "富康":
+                    System.out.println((gl - 3) * 2.4 + 3);
+                    break;
+                case "桑塔纳":
+                    System.out.println((gl - 3) * 2.7 + 3);
+                    break;
+            }
+        }
+        else {
+            switch (cx){
+                case"夏利":
+                    System.out.println("3元");
+                    break;
+                case"富康":
+                    System.out.println("4元");
+                    break;
+                case"桑塔纳":
+                    System.out.println("5元");
+                    break;
+            }
+        }
+    }
+}
+```
+
+```java
+import java.util.Scanner;
+
+public class DD2 {
+    public static void main(String[] args) {
+        Scanner a=new Scanner(System.in);
+        System.out.println("请输入年");
+        int nian=a.nextInt();
+        Scanner b=new Scanner(System.in);
+        System.out.println("请输入月");
+        int yue=b.nextInt();
+        Scanner c=new Scanner(System.in);
+        System.out.println("请输入日");
+        int ri=a.nextInt();
+        int ey;
+        if(nian % 4==0 &&nian %100!=0||nian%400==0){
+            ey=29;
+        }else ey=28;
+
+            switch (yue){
+                case 1:
+                    System.out.println(ri);
+                    break;
+                case 2:
+                    System.out.println(ri+31);
+                    break;
+                case 3:
+                    System.out.println(ri+ey+31);
+                    break;
+                case 4:
+                    System.out.println(ri+ey+31*2);
+                    break;
+                case 5:
+                    System.out.println(ri+ey+31*2+30);
+                    break;
+                case 6:
+                    System.out.println(ri+ey+31*3+30);
+                    break;
+                case 7:
+                    System.out.println(ri+ey+31*3+30*2);
+                    break;
+                case 8:
+                    System.out.println(ri+ey+31*4+30*2);
+                    break;
+                case 9:
+                    System.out.println(ri+ey+31*5+30*2);
+                    break;
+                case 10:
+                    System.out.println(ri+ey+31*5+30*3);
+                    break;
+                case 11:
+                    System.out.println(ri+ey+31*6+30*3);
+                    break;
+                case 12:
+                    System.out.println(ri+ey+31*6+30*4);
+                    break;
+            }
+        }
+
+}
+```
+
+三元运算符
+
+~~~java
+int a = 10;
+int b = 20;
+int c = a > b ? a : b; // 判断 a>b 是否为真，如果为真取a的值，如果为假，取b的值
+先执行关系表达式 看结果 是不是执行 如果执行 就执行关系表达式1 否则执行表达式2
+~~~
+
+if语句
+
+~~~java
+格式1：
+if (关系表达式) {
+    语句体;	
+}
+首先计算关系表达式的值 如果关系表达式的值为true就执行语句体  如果关系表达式的值为false就不执行语句体 继续执行后面的语句内容
+~~~
\ No newline at end of file
diff --git "a/05 \350\260\242\351\223\226\346\265\251/20221208 \345\276\252\347\216\257\346\225\260\347\273\204.md" "b/05 \350\260\242\351\223\226\346\265\251/20221208 \345\276\252\347\216\257\346\225\260\347\273\204.md"
new file mode 100644
index 0000000000000000000000000000000000000000..e27c17296598f11ffa2e3eac27d04d1e84b5f14f
--- /dev/null
+++ "b/05 \350\260\242\351\223\226\346\265\251/20221208 \345\276\252\347\216\257\346\225\260\347\273\204.md"	
@@ -0,0 +1,22 @@
+```java
+import java.util.Scanner;
+
+public class D15 {
+    public static void main(String[] args) {
+        Scanner sc=new Scanner(System.in);
+
+
+        int[]scores=new int[5];
+
+        for( int i=0;i<5;i++){
+            System.out.println("输入一个数值");
+            scores[i]= sc.nextInt();
+        }
+
+
+        for(int b=0;b<5;b++){
+            System.out.println(" "+scores[b]);
+        }
+    }
+}
+```
\ No newline at end of file
diff --git "a/05 \350\260\242\351\223\226\346\265\251/20221219\345\207\275\346\225\260.md" "b/05 \350\260\242\351\223\226\346\265\251/20221219\345\207\275\346\225\260.md"
new file mode 100644
index 0000000000000000000000000000000000000000..c9bd97b66cec33a0cfb37c280082511a86cc6bc1
--- /dev/null
+++ "b/05 \350\260\242\351\223\226\346\265\251/20221219\345\207\275\346\225\260.md"	
@@ -0,0 +1,49 @@
+~~~java
+import java.util.Scanner;
+
+public class D777 {
+    public static void main(String[] args) {
+        Scanner d1 =new Scanner(System.in);
+        System.out.println("请输入数据");
+       int a1= d1.nextInt();
+        System.out.println("请输入数据");
+        int a2= d1.nextInt();
+        int max=max(a1,a2);
+        System.out.println("最大值为"+max);
+    }
+        public static int max(int a1, int a2) {
+            if(a1>a2)
+           return a1;
+            else
+            return a2;
+
+    }
+
+}
+~~~
+
+~~~jav
+import java.util.Scanner;
+
+public class D777 {
+    public static void main(String[] args) {
+        Scanner d1 =new Scanner(System.in);
+        System.out.println("请输入数据");
+       int x= d1.nextInt();
+        System.out.println("请输入数据");
+        int y= d1.nextInt();
+        System.out.println("请输入数据");
+        int z= d1.nextInt();
+        int sum=sum(x,y,z);
+        System.out.println("三个数的立方是"+ sum);
+    }
+        public static int sum(int x, int y,int z) {
+       int sum=x*x*x+y*y*y+z*z*z;
+        return sum;
+
+
+    }
+
+}
+~~~
+
diff --git "a/05\350\260\242\351\223\226\346\265\251/2022121\350\260\242\351\223\226\346\265\251.md" "b/05 \350\260\242\351\223\226\346\265\251/2022121\350\260\242\351\223\226\346\265\251.md"
similarity index 100%
rename from "05\350\260\242\351\223\226\346\265\251/2022121\350\260\242\351\223\226\346\265\251.md"
rename to "05 \350\260\242\351\223\226\346\265\251/2022121\350\260\242\351\223\226\346\265\251.md"
diff --git "a/05 \350\260\242\351\223\226\346\265\251/20221220.md" "b/05 \350\260\242\351\223\226\346\265\251/20221220.md"
new file mode 100644
index 0000000000000000000000000000000000000000..24ecafd5941d3d5e2686c399dbaca4f366804aaa
--- /dev/null
+++ "b/05 \350\260\242\351\223\226\346\265\251/20221220.md"	
@@ -0,0 +1,152 @@
+import java.util.Scanner;
+7
+
+8
+public class gu {
+9
+    public static void main(String[] args) {
+10
+        Scanner sc = new Scanner(System.in);
+11
+        System.out.println("输入⚪的半径");
+12
+        ad(sc.nextDouble(),3.14);
+13
+    }
+14
+    public static void ad(double a, double b){
+15
+        System.out.println("半径是"+2*b*a);
+16
+        System.out.println("面积是"+b*a*a);
+17
+    }
+18
+
+19
+}
+20
+```
+21
+
+22
+ 在主函数中产生20个0-10之间的随机数，将这20个随机数存入数组，并通过函数计算某个数在这些随机数中出现的次数（这“某个数”是在主函数中由用户输入的）
+23
+
+24
+```java
+25
+import java.util.Arrays;
+26
+import java.util.Scanner;
+27
+
+28
+public class shuzu {
+29
+    public static void main(String[] args) {
+30
+        long[] num = new long[10];
+31
+        for (int i = 0; i < 20; i++) {
+32
+            num[i] = Math.round(Math.random() * 10);
+33
+        }
+34
+        Scanner sc = new Scanner(System.in);
+35
+        System.out.println("输入一个数");
+36
+        long A = sc.nextLong();
+37
+        af(num, A);
+38
+    }
+39
+
+40
+    public static void af(long[] num, long A) {
+41
+        int count = 0;
+42
+        for (int i=0;i< num.length;i++){
+43
+            if (A==num[i]){
+44
+                count++;
+45
+            }
+46
+        }
+47
+        System.out.println(Arrays.toString(num));
+48
+        System.out.println("次数是"+count);
+49
+    }
+50
+}
+51
+```
+52
+
+53
+在主函数中接收10个数存入数组，在自定义函数中，将该数组中的最大值与第一个元素交换，最小值与最后一个元素交换，然后在主函数中输出交换后的数组
+54
+
+55
+```java
+56
+import java.util.Arrays;
+57
+
+58
+public class dfas {
+59
+    public static void main(String[] args) {
+60
+        int ac[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+61
+        System.out.println(Arrays.toString(ac));
+62
+        add(ac);
+63
+
+64
+    }
+65
+
+66
+    public static void add(int brr[]) {
+67
+        int max = brr[0];
+68
+        int x = brr[0];
+69
+
+70
+        for (int i = 0; i < brr.length; i++) {
+71
+            if (brr[i] > max) {
+72
+                max = brr[i];
+73
+            }
+74
+        }
+75
+        for (int i=0;i< brr.length;i++){
+76
+            if (brr[i]==max){
+77
+                brr[i]=x;
+78
+            }
+79
+        }
+80
+        brr[0]=max;
+81
+        System.out.print("[");
+8
\ No newline at end of file
diff --git "a/05 \350\260\242\351\223\226\346\265\251/2022124 if\345\222\214\345\276\252\347\216\257.md" "b/05 \350\260\242\351\223\226\346\265\251/2022124 if\345\222\214\345\276\252\347\216\257.md"
new file mode 100644
index 0000000000000000000000000000000000000000..92abb242cbec38d22c3eb63705fb640e5c2567a6
--- /dev/null
+++ "b/05 \350\260\242\351\223\226\346\265\251/2022124 if\345\222\214\345\276\252\347\216\257.md"	
@@ -0,0 +1,63 @@
+```java
+import java.util.Scanner;
+
+public class D10 {
+    public static void main(String[] args) {
+        //2.用户分别输入数 a,数b,让程序实现从a 开始循环到b.
+        // 输出"有生之年,能看到中国队出线吗?"
+        int a,b,i;
+        Scanner sc=new Scanner(System.in);
+        System.out.println("输出a的数");
+        a= sc.nextInt();
+        System.out.println("输出b的数");
+        b= sc.nextInt();
+        if (a>b){
+            for (i=0;i<a-b;i++){
+                System.out.println("谢铖浩大帅哥啊66");
+            }
+        }else {
+            for (i=0;i<b-a;i++){
+                System.out.println("谢铖浩大帅哥啊66");
+            }
+        }
+
+    }
+}
+```
+
+```java
+import java.util.Scanner;
+
+public class D9 {
+    public static void main(String[] args) {
+        //1.让用户输入一个数字,根据这个数字,循环输出"我爱学习,我爱 java",
+        // 比如,用户输入数字 9 就在控制台输出9行"我爱学习,我爱 java"
+        Scanner num=new Scanner(System.in);
+        System.out.println("请输入循环的次数");
+        int i;
+        int cs= num.nextInt();
+        for (i=0;i<cs;i++){
+            System.out.println("赵敏大美女66");
+        }
+    }
+}
+```
+
+```java
+public class D8 {
+    public static void main(String[] args) {
+        int i;
+        int j;
+        for (i=1;i<10;i++){
+            for (j=1;j<i;j++){
+                System.out.print(i+"*"+j+"="+(i*j)+"\t");
+            }
+            System.out.println(" ");
+        }
+    }
+}
+```
+
+# 笔记：
+
+上节课实在不知道记啥
\ No newline at end of file
diff --git "a/05 \350\260\242\351\223\226\346\265\251/2022125.md" "b/05 \350\260\242\351\223\226\346\265\251/2022125.md"
new file mode 100644
index 0000000000000000000000000000000000000000..6e1475553ac5358cfcc74cb6866f13ab847a4f0a
--- /dev/null
+++ "b/05 \350\260\242\351\223\226\346\265\251/2022125.md"	
@@ -0,0 +1,54 @@
+```java
+public class d12 {
+    public static void main(String[] args) {
+        //求555 555的约数中最大的三位数
+        int i;
+        int a=555555;
+        int da=0;
+        for (i=100;i<=999;i++){
+            if (555555%i==0){
+                da=i;
+            }
+        }
+        System.out.println(da);
+    }
+}
+```
+
+```java
+import java.util.Random;
+import java.util.Scanner;
+
+public class d13 {
+    public static void main(String[] args) {
+        int num;
+        int shuru;
+        int count=0;
+        Random ran = new Random();
+        num = ran.nextInt(100);
+        Scanner Sc = new Scanner(System.in);
+        while (true){
+            System.out.println("请输入一个数");
+            shuru = Sc.nextInt();
+            if (shuru>num){
+                System.out.println("你猜的数字太大了");
+            } else if (shuru<num) {
+                System.out.println("你猜的数字太小了");
+            }else{
+                System.out.println("恭喜你猜对了");
+                break;
+            }
+            count++;
+        }
+      if (count==1){
+          System.out.println("你太聪明了");
+      } else if (count>=2&&count<=6) {
+          System.out.println("你一点点聪明");
+      }else{
+          System.out.println("你真蠢");
+      }
+    }
+}
+```
+
+# 笔记：
\ No newline at end of file