From d3e35b3ae961d14dbcb23a9658d3163ca50dd284 Mon Sep 17 00:00:00 2001
From: fw_qaq <82551626+Jack-Zhang-1314@users.noreply.github.com>
Date: Sun, 20 Nov 2022 18:02:32 +0800
Subject: [PATCH 1/3] =?UTF-8?q?Update=200112.=E8=B7=AF=E5=BE=84=E6=80=BB?=
 =?UTF-8?q?=E5=92=8C.md?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 problems/0112.路径总和.md | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/problems/0112.路径总和.md b/problems/0112.路径总和.md
index d50f23f9..482787bf 100644
--- a/problems/0112.路径总和.md
+++ b/problems/0112.路径总和.md
@@ -1213,6 +1213,28 @@ object Solution {
 }
 ```
 
+## rust
+
+### 112.路径总和.md
+
+```rust
+use std::rc::Rc;
+use std::cell::RefCell;
+impl Solution {
+    pub fn has_path_sum(root: Option<Rc<RefCell<TreeNode>>>, target_sum: i32) -> bool {
+        if root.is_none() {
+            return false;
+        }
+        let node = root.unwrap();
+        if node.borrow().left.is_none() && node.borrow().right.is_none() {
+            return node.borrow().val == target_sum;
+        }
+        return Self::has_path_sum(node.borrow().left.clone(), target_sum - node.borrow().val)
+            || Self::has_path_sum(node.borrow().right.clone(), target_sum - node.borrow().val);
+    }
+}
+```
+
 <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"/>

From 47b7cf3cae785ec43be3e08dc8db8143d3f9aaca Mon Sep 17 00:00:00 2001
From: fw_qaq <82551626+Jack-Zhang-1314@users.noreply.github.com>
Date: Sun, 20 Nov 2022 22:06:39 +0800
Subject: [PATCH 2/3] =?UTF-8?q?Update=200112.=E8=B7=AF=E5=BE=84=E6=80=BB?=
 =?UTF-8?q?=E5=92=8C.md?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 problems/0112.路径总和.md | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/problems/0112.路径总和.md b/problems/0112.路径总和.md
index 482787bf..f717f6b8 100644
--- a/problems/0112.路径总和.md
+++ b/problems/0112.路径总和.md
@@ -1217,6 +1217,8 @@ object Solution {
 
 ### 112.路径总和.md
 
+递归：
+
 ```rust
 use std::rc::Rc;
 use std::cell::RefCell;
@@ -1235,6 +1237,38 @@ impl Solution {
 }
 ```
 
+迭代：
+
+```rust
+use std::rc::Rc;
+use std::cell::RefCell;
+impl Solution {
+    pub fn has_path_sum(root: Option<Rc<RefCell<TreeNode>>>, target_sum: i32) -> bool {
+        let mut stack = vec![];
+        if let Some(node) = root {
+            stack.push((node.borrow().val, node.to_owned()));
+        }
+        while !stack.is_empty() {
+            let (value, node) = stack.pop().unwrap();
+            if node.borrow().left.is_none() && node.borrow().right.is_none() && value == target_sum
+            {
+                return true;
+            }
+            if node.borrow().left.is_some() {
+                if let Some(r) = node.borrow().left.as_ref() {
+                    stack.push((r.borrow().val + value, r.to_owned()));
+                }
+            }
+            if node.borrow().right.is_some() {
+                if let Some(r) = node.borrow().right.as_ref() {
+                    stack.push((r.borrow().val + value, r.to_owned()));
+                }
+            }
+        }
+        false
+    }
+```
+
 <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"/>

From 1fef4a77be4ceefde5406a774706c00de77917cc Mon Sep 17 00:00:00 2001
From: fw_qaq <82551626+Jack-Zhang-1314@users.noreply.github.com>
Date: Mon, 21 Nov 2022 22:31:55 +0800
Subject: [PATCH 3/3] =?UTF-8?q?Update=200112.=E8=B7=AF=E5=BE=84=E6=80=BB?=
 =?UTF-8?q?=E5=92=8C.md?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 problems/0112.路径总和.md | 49 +++++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)

diff --git a/problems/0112.路径总和.md b/problems/0112.路径总和.md
index f717f6b8..effe7649 100644
--- a/problems/0112.路径总和.md
+++ b/problems/0112.路径总和.md
@@ -1269,6 +1269,55 @@ impl Solution {
     }
 ```
 
+### 113.路径总和-ii
+
+```rust
+impl Solution {
+    pub fn path_sum(root: Option<Rc<RefCell<TreeNode>>>, target_sum: i32) -> Vec<Vec<i32>> {
+        let mut res = vec![];
+        let mut route = vec![];
+        if root.is_none() {
+            return res;
+        } else {
+            route.push(root.as_ref().unwrap().borrow().val);
+        }
+        Self::recur(
+            &root,
+            target_sum - root.as_ref().unwrap().borrow().val,
+            &mut res,
+            &mut route,
+        );
+        res
+    }
+
+    pub fn recur(
+        root: &Option<Rc<RefCell<TreeNode>>>,
+        sum: i32,
+        res: &mut Vec<Vec<i32>>,
+        route: &mut Vec<i32>,
+    ) {
+        let node = root.as_ref().unwrap().borrow();
+        if node.left.is_none() && node.right.is_none() && sum == 0 {
+            res.push(route.to_vec());
+            return;
+        }
+        if node.left.is_some() {
+            let left = node.left.as_ref().unwrap();
+            route.push(left.borrow().val);
+            Self::recur(&node.left, sum - left.borrow().val, res, route);
+            route.pop();
+        }
+        if node.right.is_some() {
+            let right = node.right.as_ref().unwrap();
+            route.push(right.borrow().val);
+            Self::recur(&node.right, sum - right.borrow().val, res, route);
+            route.pop();
+        }
+    }
+}
+
+```
+
 <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"/>