From 3a16650abe53b59bb9ab99c931993ef1f253d22c Mon Sep 17 00:00:00 2001
From: ZerenZhang2022 <118794589+ZerenZhang2022@users.noreply.github.com>
Date: Mon, 6 Mar 2023 01:49:19 -0500
Subject: [PATCH 1/2] =?UTF-8?q?Update=200202.=E5=BF=AB=E4=B9=90=E6=95=B0.m?=
 =?UTF-8?q?d?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

python的另一种写法 - 通过字符串来计算各位平方和
---
 problems/0202.快乐数.md | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/problems/0202.快乐数.md b/problems/0202.快乐数.md
index 1a7d53a3..2687574f 100644
--- a/problems/0202.快乐数.md
+++ b/problems/0202.快乐数.md
@@ -132,6 +132,19 @@ class Solution:
             else:
                 record.add(n)
 
+# python的另一种写法 - 通过字符串来计算各位平方和
+class Solution:
+    def isHappy(self, n: int) -> bool:
+        record = []
+        while n not in record:
+            record.append(n)
+            newn = 0
+            nn = str(n)
+            for i in nn:
+                newn+=int(i)**2
+            if newn==1: return True
+            n = newn
+        return False
 ```
 
 Go：

From 202013fd817e303e14d5f43a324b55b9c9810ead Mon Sep 17 00:00:00 2001
From: Jeremy Feng <44312563+jeremy-feng@users.noreply.github.com>
Date: Tue, 7 Mar 2023 17:46:03 +0800
Subject: [PATCH 2/2] =?UTF-8?q?Update=200070.=E7=88=AC=E6=A5=BC=E6=A2=AF.m?=
 =?UTF-8?q?d?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

修改错别字
---
 problems/0070.爬楼梯.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/problems/0070.爬楼梯.md b/problems/0070.爬楼梯.md
index 14aeef01..d4a7881d 100644
--- a/problems/0070.爬楼梯.md
+++ b/problems/0070.爬楼梯.md
@@ -72,7 +72,7 @@ dp[i]： 爬到第i层楼梯，有dp[i]种方法
 
 3. dp数组如何初始化
 
-在回顾一下dp[i]的定义：爬到第i层楼梯，有dp[i]中方法。
+再回顾一下dp[i]的定义：爬到第i层楼梯，有dp[i]中方法。
 
 那么i为0，dp[i]应该是多少呢，这个可以有很多解释，但基本都是直接奔着答案去解释的。