diff --git a/数据结构与算法之美/数据结构 - 队列.md b/数据结构与算法之美/数据结构 - 队列.md
index 965b42b..3d303f0 100644
--- a/数据结构与算法之美/数据结构 - 队列.md	
+++ b/数据结构与算法之美/数据结构 - 队列.md	
@@ -2,36 +2,32 @@
 
 ```javascript
 class StackQueue {
- private stack1: number[] = [];
- private stack2: number[] = [];
- add(value: number) {
- this.stack1.push(value);
- }
- popup() {
- if (!this.stack1.length) return;
- while (this.stack1.length) {
- const stackValue = this.stack1.pop();
- this.stack2.push(stackValue!);
- }
- const popValue = this.stack2.pop();
- while (this.stack2.length) {
- const stackValue = this.stack2.pop();
- this.stack1.push(stackValue!);
- }
-
-  
-
- return popValue;
-
- }
-
-  
-
- get length() {
-
- return this.stack1.length;
-
- }
-
+	private stack1: number[] = [];
+	private stack2: number[] = [];
+	
+	add(value: number) {
+		this.stack1.push(value);
+	}
+	
+	popup() {
+		if (!this.stack1.length) return;
+		while (this.stack1.length) {
+			const stackValue = this.stack1.pop();
+			this.stack2.push(stackValue!);
+		}
+	
+		const popValue = this.stack2.pop();
+		
+		while (this.stack2.length) {
+			const stackValue = this.stack2.pop();
+			this.stack1.push(stackValue!);
+		}
+		
+		return popValue;
+	}
+	
+	get length() {
+		return this.stack1.length;
+	}
 }
 ```
\ No newline at end of file