From 40db2893574c453acfeba8399410667be68cc1bb Mon Sep 17 00:00:00 2001
From: fw_qaq <82551626+fwqaaq@users.noreply.github.com>
Date: Mon, 5 Dec 2022 22:26:55 +0800
Subject: [PATCH 1/2] =?UTF-8?q?Update=200701.=E4=BA=8C=E5=8F=89=E6=90=9C?=
 =?UTF-8?q?=E7=B4=A2=E6=A0=91=E4=B8=AD=E7=9A=84=E6=8F=92=E5=85=A5=E6=93=8D?=
 =?UTF-8?q?=E4=BD=9C.md?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../0701.二叉搜索树中的插入操作.md | 36 +++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/problems/0701.二叉搜索树中的插入操作.md b/problems/0701.二叉搜索树中的插入操作.md
index 2e899e22..b8d53b04 100644
--- a/problems/0701.二叉搜索树中的插入操作.md
+++ b/problems/0701.二叉搜索树中的插入操作.md
@@ -641,6 +641,42 @@ object Solution {
 }
 ```
 
+### rust
+
+迭代：
+
+```rust
+impl Solution {
+    pub fn insert_into_bst(
+        root: Option<Rc<RefCell<TreeNode>>>,
+        val: i32,
+    ) -> Option<Rc<RefCell<TreeNode>>> {
+        if root.is_none() {
+            return Some(Rc::new(RefCell::new(TreeNode::new(val))));
+        }
+        let mut cur = root.clone();
+        let mut pre = None;
+        while let Some(node) = cur.clone() {
+            pre = cur;
+            if node.borrow().val > val {
+                cur = node.borrow().left.clone();
+            } else {
+                cur = node.borrow().right.clone();
+            };
+        }
+        let r = Some(Rc::new(RefCell::new(TreeNode::new(val))));
+        let mut p = pre.as_ref().unwrap().borrow_mut();
+        if val < p.val {
+            p.left = r;
+        } else {
+            p.right = r;
+        }
+
+        root
+    }
+}
+```
+
 
 <p align="center">
 <a href="https://programmercarl.com/other/kstar.html" target="_blank">

From eb76f57a19e813e77490931d97787a4d8b4a0552 Mon Sep 17 00:00:00 2001
From: fw_qaq <82551626+fwqaaq@users.noreply.github.com>
Date: Mon, 5 Dec 2022 22:55:08 +0800
Subject: [PATCH 2/2] =?UTF-8?q?Update=200701.=E4=BA=8C=E5=8F=89=E6=90=9C?=
 =?UTF-8?q?=E7=B4=A2=E6=A0=91=E4=B8=AD=E7=9A=84=E6=8F=92=E5=85=A5=E6=93=8D?=
 =?UTF-8?q?=E4=BD=9C.md?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../0701.二叉搜索树中的插入操作.md | 24 +++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/problems/0701.二叉搜索树中的插入操作.md b/problems/0701.二叉搜索树中的插入操作.md
index b8d53b04..559c3900 100644
--- a/problems/0701.二叉搜索树中的插入操作.md
+++ b/problems/0701.二叉搜索树中的插入操作.md
@@ -677,6 +677,30 @@ impl Solution {
 }
 ```
 
+递归：
+
+```rust
+impl Solution {
+    pub fn insert_into_bst(
+        root: Option<Rc<RefCell<TreeNode>>>,
+        val: i32,
+    ) -> Option<Rc<RefCell<TreeNode>>> {
+        if let Some(node) = &root {
+            if node.borrow().val > val {
+                let left = Self::insert_into_bst(node.borrow_mut().left.take(), val);
+                node.borrow_mut().left = left;
+            } else {
+                let right = Self::insert_into_bst(node.borrow_mut().right.take(), val);
+                node.borrow_mut().right = right;
+            }
+            root
+        } else {
+            Some(Rc::new(RefCell::new(TreeNode::new(val))))
+        }
+    }
+}
+```
+
 
 <p align="center">
 <a href="https://programmercarl.com/other/kstar.html" target="_blank">