From ca4c4f7f8be13af4ec8106fdc6e07ca26d6927c1 Mon Sep 17 00:00:00 2001
From: ZGQ <gangqingzhao321@163.com>
Date: Wed, 28 Sep 2022 20:07:51 +0800
Subject: [PATCH] =?UTF-8?q?Update=200129.=E6=B1=82=E6=A0=B9=E8=8A=82?=
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---
 problems/0129.求根到叶子节点数字之和.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/problems/0129.求根到叶子节点数字之和.md b/problems/0129.求根到叶子节点数字之和.md
index 859df39e..bd5107a2 100644
--- a/problems/0129.求根到叶子节点数字之和.md
+++ b/problems/0129.求根到叶子节点数字之和.md
@@ -320,8 +320,11 @@ TypeScript：
 ```typescript
 function sumNumbers(root: TreeNode | null): number {
     if (root === null) return 0;
+    // 记录最终结果
     let resTotal: number = 0;
+    // 记录路径中遇到的节点值
     const route: number[] = [];
+    // 递归初始值
     route.push(root.val);
     recur(root, route);
     return resTotal;
@@ -342,6 +345,7 @@ function sumNumbers(root: TreeNode | null): number {
         };
     }
     function listToSum(nums: number[]): number {
+        // 数组求和
         return Number(nums.join(''));
     }
 };