From 99b8b5744ef3aadb97da6ea9049ed2c1f53dbdc5 Mon Sep 17 00:00:00 2001
From: "Farmer.Chillax" <48387781+FarmerChillax@users.noreply.github.com>
Date: Tue, 31 Oct 2023 23:02:44 +0800
Subject: [PATCH] =?UTF-8?q?Update=200242.=E6=9C=89=E6=95=88=E7=9A=84?=
 =?UTF-8?q?=E5=AD=97=E6=AF=8D=E5=BC=82=E4=BD=8D=E8=AF=8D.md?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 problems/0242.有效的字母异位词.md | 25 +++++++++++++++++++++++
 1 file changed, 25 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 f47d8b05..6eed90a7 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
@@ -181,6 +181,31 @@ func isAnagram(s string, t string) bool {
 }
 ```
 
+Go 写法二(只对字符串遍历一次)
+```go
+func isAnagram(s string, t string) bool {
+	if len(s) != len(t) {
+		return false
+	}
+	records := [26]int{}
+	for index := 0; index < len(s); index++ {
+		if s[index] == t[index] {
+			continue
+		}
+		sCharIndex := s[index] - 'a'
+		records[sCharIndex]++
+		tCharIndex := t[index] - 'a'
+		records[tCharIndex]--
+	}
+	for _, record := range records {
+		if record != 0 {
+			return false
+		}
+	}
+	return true
+}
+```
+
 ### JavaScript:
 
 ```js