Update 0236.二叉树的最近公共祖先.md

problems/0236.二叉树的最近公共祖先.md

@@ -384,6 +384,34 @@ object Solution {
 }
 ```
 
+## rust
+
+```rust
+impl Solution {
+    pub fn lowest_common_ancestor(
+        root: Option<Rc<RefCell<TreeNode>>>,
+        p: Option<Rc<RefCell<TreeNode>>>,
+        q: Option<Rc<RefCell<TreeNode>>>,
+    ) -> Option<Rc<RefCell<TreeNode>>> {
+        if root == p || root == q || root.is_none() {
+            return root;
+        }
+        let left = Self::lowest_common_ancestor(
+            root.as_ref().unwrap().borrow().left.clone(),
+            p.clone(),
+            q.clone(),
+        );
+        let right =
+            Self::lowest_common_ancestor(root.as_ref().unwrap().borrow().right.clone(), p, q);
+        match (&left, &right) {
+            (None, Some(_)) => right,
+            (Some(_), Some(_)) => root,
+            _ => left,
+        }
+    }
+}
+```
+
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