From 64b9363cd5079ba783461c54ad0a7a216b8f8512 Mon Sep 17 00:00:00 2001
From: "qingyi.liu" <qingyival@163.com>
Date: Wed, 26 May 2021 17:01:03 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A020.=20=E6=9C=89=E6=95=88?=
 =?UTF-8?q?=E7=9A=84=E6=8B=AC=E5=8F=B7JavaScript=E7=89=88=E6=9C=AC?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 problems/0020.有效的括号.md | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/problems/0020.有效的括号.md b/problems/0020.有效的括号.md
index 315ff384..dae84354 100644
--- a/problems/0020.有效的括号.md
+++ b/problems/0020.有效的括号.md
@@ -271,6 +271,23 @@ var isValid = function (s) {
   }
   return stack.length === 0;
 };
+// 简化版本
+var isValid = function(s) {
+    const stack = [], 
+        map = {
+            "(":")",
+            "{":"}",
+            "[":"]"
+        };
+    for(const x of s) {
+        if(x in map) {
+            stack.push(x);
+            continue;
+        };
+        if(map[stack.pop()] !== x) return false;
+    }
+    return !stack.length;
+};
 ```