From 8f58ab445a4f7a50a0a9d3ab9c2041dba0c1f2d9 Mon Sep 17 00:00:00 2001
From: Erincrying <1016158928@qq.com>
Date: Tue, 11 Apr 2023 20:20:33 +0800
Subject: [PATCH] =?UTF-8?q?=E6=9B=B4=E6=96=B0242.=E6=9C=89=E6=95=88?=
 =?UTF-8?q?=E7=9A=84=E5=AD=97=E6=AF=8D=E5=BC=82=E4=BD=8D=E8=AF=8D=EF=BC=8C?=
 =?UTF-8?q?js=E6=96=B9=E6=B3=95=EF=BC=8C=E9=87=87=E7=94=A8map?=
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Content-Transfer-Encoding: 8bit

---
 problems/0242.有效的字母异位词.md | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/problems/0242.有效的字母异位词.md b/problems/0242.有效的字母异位词.md
index 1006ea35..ba802bbd 100644
--- a/problems/0242.有效的字母异位词.md
+++ b/problems/0242.有效的字母异位词.md
@@ -205,6 +205,19 @@ var isAnagram = function(s, t) {
     }
     return true;
 };
+
+var isAnagram = function(s, t) {
+  if(s.length !== t.length) return false;
+  let char_count = new Map();
+  for(let item of s) {
+    char_count.set(item, (char_count.get(item) || 0) + 1) ;
+  }
+  for(let item of t) {
+    if(!char_count.get(item)) return false;
+    char_count.set(item, char_count.get(item)-1);
+  }
+  return true;
+};
 ```
 
 TypeScript：