diff --git a/day07/src/com/inmind/random02/Demo05.java b/day07/src/com/inmind/random02/Demo05.java
index e0db8bd..cd838b5 100644
--- a/day07/src/com/inmind/random02/Demo05.java
+++ b/day07/src/com/inmind/random02/Demo05.java
@@ -19,6 +19,14 @@ public class Demo05 {
 
     public static void main(String[] args) {
         //获取10个 【55~66，包含55和66】之间的随机值
+        //55~66  - 55  ---> 0~11 ----->random.nextInt(12)
+        Random random = new Random();
+        for (int i = 0; i < 100; i++) {
+//            int val = random.nextInt(12)+55;
+            int val = random.nextInt(55, 67);//17以上才有
+            System.out.println(val);
+        }
+
     }