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 61182758..88fa06d8 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
@@ -173,6 +173,22 @@ func isAnagram(s string, t string) bool {
 }
 ```
 
+Go写法二（没有使用slice作为哈希表，用数组来代替）：
+
+```go
+func isAnagram(s string, t string) bool {
+    record := [26]int{}
+    for _, r := range s {
+        record[r-rune('a')]++
+    }
+    for _, r := range t {
+        record[r-rune('a')]--
+    }
+
+    return record == [26]int{}
+}
+```
+
 javaScript:
 
 ```js