diff --git a/3 Hash Table/HashMap in Golang.md b/3 Hash Table/HashMap in Golang.md
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+++ b/3 Hash Table/HashMap in Golang.md	
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+# HashMap in Golang
+
+java 中 hashmap的实现原理
diff --git a/3 Hash Table/HashMap in Java.md b/3 Hash Table/HashMap in Java.md
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+# HashMap in Java
+
+java 中 hashmap的实现原理
+