From 195b8aefddc4266487c2c0894344134d4594bdb0 Mon Sep 17 00:00:00 2001
From: jerryfishcode <91447694+jerryfishcode@users.noreply.github.com>
Date: Mon, 27 Sep 2021 17:23:26 +0800
Subject: [PATCH] =?UTF-8?q?=E6=96=B0=E5=A2=9E1221.=E5=88=86=E5=89=B2?=
 =?UTF-8?q?=E5=B9=B3=E8=A1=A1=E5=AD=97=E7=AC=A6=E4=B8=B2=20JavaScript?=
 =?UTF-8?q?=E7=89=88=E6=9C=AC?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 problems/1221.分割平衡字符串.md | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/problems/1221.分割平衡字符串.md b/problems/1221.分割平衡字符串.md
index c764e3ff..381ad060 100644
--- a/problems/1221.分割平衡字符串.md
+++ b/problems/1221.分割平衡字符串.md
@@ -108,6 +108,15 @@ public:
 ## JavaScript
 
 ```js
+var balancedStringSplit = function(s) {
+    let res = 0, total = 0;//res为平衡字符串数量 total为当前"R"字符和"L"字符的数量差
+    for(let c of s){// 遍历字符串每个字符
+        //因为开始字符数量差就是0，遍历的时候要先改变数量差，否则会影响结果数量
+        total += c === 'R' ? 1:-1;//遇到"R",total++;遇到"L",total--
+        if(total === 0) res++;//只要"R""L"数量一样就可以算是一个平衡字符串
+    }
+    return res;
+};
 ```
 
 -----------------------