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Main.java

-class Main {
-  public static void main(String[] args) {
-    System.out.println("Hello world!");
-  }
+import java.util.Random;
+import java.util.Scanner;
+
+public class demo10 {
+    public static void main(String[] args) {
+        Random r=new Random();
+        int num=r.nextInt(100)+1;
+        Scanner sc=new Scanner(System.in);
+        while(true){
+            System.out.println("请输入数:");
+            int a=sc.nextInt();
+            if(a==num){
+                System.out.println("猜对了！");
+                break;
+            }
+            if(a<num){
+                System.out.println("猜小了，请继续:");
+
+            }
+            if (a>num){
+                System.out.println("猜大了，请继续：");
+            }
+        }
+        System.out.println("游戏结束");
+    }
 }
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