225-implement-stack-using-queues.md Updated len(self.queue) == 0 to not self.queue.

gazeldx · gazeldx · commit 8a381aa8ad7c · 2025-01-19T16:37:11.000+08:00
diff --git a/en/1-1000/225-implement-stack-using-queues.md b/en/1-1000/225-implement-stack-using-queues.md
@@ -169,7 +169,7 @@ class MyStack:
         return value
 
     def empty(self) -> bool:
-        return len(self.queue) == 0
+        return not self.queue
 ```
 
 ### Solution for option 2: It is short and easy to understand (recommended).
@@ -199,7 +199,7 @@ class MyStack:
         return self.queue[0]
 
     def empty(self) -> bool:
-        return len(self.queue) == 0
+        return not self.queue
 ```
 
 ## Java
diff --git a/zh/1-1000/225-implement-stack-using-queues.md b/zh/1-1000/225-implement-stack-using-queues.md
@@ -169,7 +169,7 @@ class MyStack:
         return value
 
     def empty(self) -> bool:
-        return len(self.queue) == 0
+        return not self.queue
 ```
 
 ### 方案二：推荐的方案。既短，又好理解。
@@ -199,7 +199,7 @@ class MyStack:
         return self.queue[0]
 
     def empty(self) -> bool:
-        return len(self.queue) == 0
+        return not self.queue
 ```
 
 ## Java
