update 0225.用队列实现栈.md about rust

problems/0225.用队列实现栈.md

@@ -1018,7 +1018,7 @@ class MyStack {
     }
 }
 ```
-> 单对列
+> 单队列
 ```php
 class MyStack {
     public $queue;
@@ -1051,6 +1051,44 @@ class MyStack {
     }
 }
 ```
+
+> rust：单队列
+
+```rust
+struct MyStack {
+    queue: Vec<i32>,
+}
+
+impl MyStack {
+    fn new() -> Self {
+        MyStack { queue: vec![] }
+    }
+
+    fn push(&mut self, x: i32) {
+        self.queue.push(x);
+    }
+
+    fn pop(&mut self) -> i32 {
+        let len = self.queue.len() - 1;
+        for _ in 0..len {
+            let tmp = self.queue.remove(0);
+            self.queue.push(tmp);
+        }
+        self.queue.remove(0)
+    }
+
+    fn top(&mut self) -> i32 {
+        let res = self.pop();
+        self.queue.push(res);
+        res
+    }
+
+    fn empty(&self) -> bool {
+        self.queue.is_empty()
+    }
+}
+```
+
 <p align="center">
 <a href="https://programmercarl.com/other/kstar.html" target="_blank">
   <img src="../pics/网站星球宣传海报.jpg" width="1000"/>