diff --git "a/37 \346\217\255\351\230\263\344\270\275/jyl2.md.md" "b/37 \346\217\255\351\230\263\344\270\275/20221128 \350\277\220\347\256\227\347\254\246"
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diff --git "a/37 \346\217\255\351\230\263\344\270\275/jyl.md" "b/37 \346\217\255\351\230\263\344\270\275/20221129 \350\277\220\347\256\227\347\254\246\345\217\230\351\207\217"
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diff --git "a/37 \346\217\255\351\230\263\344\270\275/jyl3.md.txt" "b/37 \346\217\255\351\230\263\344\270\275/20221201 java-if \350\257\255\345\217\245"
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diff --git "a/37 \346\217\255\351\230\263\344\270\275/20221202 switch\345\222\214if\350\257\255\345\217\245.txt" "b/37 \346\217\255\351\230\263\344\270\275/20221202 switch\345\222\214if\350\257\255\345\217\245.txt"
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index 0000000000000000000000000000000000000000..7a15b84f58ca2e316fa6b3b31f07bbb0edb62337
--- /dev/null
+++ "b/37 \346\217\255\351\230\263\344\270\275/20221202 switch\345\222\214if\350\257\255\345\217\245.txt"	
@@ -0,0 +1,119 @@
+```java
+public class Switch {
+    public static void main(String[] args) {
+        Scanner sc = new Scanner(System.in)
+;        System.out.println("请输入乘车车型");
+        String name= sc.next();
+        System.out.println("请输入行车千米数");
+        int num= sc.nextInt();
+        if(num<=3) {
+            switch (name) {
+                case "夏利":
+                    System.out.println("夏利三公里以内3元");
+                    break;
+                case "富康":
+                    System.out.println("富康三公里以内4元");
+                    break;
+                case "桑塔纳":
+                    System.out.println("桑塔纳三公里以内5元");
+                    break;
+            }
+        }
+            else if(num>3){
+               switch (name){
+                   case"夏利":
+                       System.out.println(3+(num-3)*2.1+"元");
+                  break;
+                   case"富康":
+                       System.out.println(4+(num-3)*2.4+"元");
+                   break;
+                   case"桑塔纳":
+                       System.out.println(5+(num-3)*2.7+"元");
+                   break;
+            }
+        }
+    }
+}
+```
+
+```java
+package Switch;
+
+import java.util.Scanner;
+
+public class Switch2 {
+    public static void main(String[] args) {
+        Scanner sc = new Scanner(System.in);
+        System.out.println("请输入年份");
+        int nian=sc.nextInt();
+        System.out.println("请输入月份");
+        int yue =sc.nextInt();
+        System.out.println("请输入日期");
+        int rv=sc.nextInt();
+        int hua;
+        int d1=0;
+        if (nian%400==0||nian%4==0 && nian%100!=0){
+            hua=29;
+        }
+        else {
+             hua=28;
+        }
+        switch (yue){
+            case 1 :
+                d1 = rv;
+
+                break;
+            case 2 :
+                d1 = 31+rv ;
+
+                break;
+            case 3 :
+                d1 = 31+hua+rv ;
+
+                break;
+            case 4 :
+                d1 = 2*31+hua+rv ;
+
+                break;
+            case 5 :
+                d1 = 2*31+hua+rv+30 ;
+
+                break;
+            case 6 :
+                d1 = 3*31+hua+rv+30 ;
+
+                break;
+            case 7 :
+                d1 = 3*31+hua+rv+30*2 ;
+
+                break;
+            case 8 :
+                d1 = 4*31+hua+rv+30*2 ;
+
+                break;
+            case 9 :
+                d1 = 4*31+hua+rv+30*2;
+
+                break;
+            case 10 :
+                d1 =5*31+hua+rv+30*3;
+
+                break;
+            case 11 :
+                d1 =6*31+hua+rv+30*3;
+
+                break;
+            case 12 :
+
+                d1 = 6*31+hua+rv+30*4 ;
+
+                break;
+            default:
+                System.out.println("错误");
+        }
+        System.out.println(nian+"年"+yue+"月"+rv+"日"+"今年第"+d1+"天");
+    }
+}
+
+```
+