Update 2019-08-16.md

Initiativethinker · Aug 17, 2019 · be3b7f7 · be3b7f7
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Showing 1 changed file with 1 addition and 1 deletion.
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 * 时间：2019-08-16
 * 题目链接：无
-* tag：`Map`  
+* tag：`String` `Hash Table` 
 ## 题目描述
 ```
 求一个字符串首尾相等的最长子串，例如abcba，最长就是abcba