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Update 数据结构.md

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shuang.kou 2020-04-01 22:56:45 +08:00
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docs/dataStructures-algorithms/数据结构.md
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@ -155,7 +155,7 @@ Set 继承于 Collection 接口，是一个不允许出现重复元素，并且
红黑树的应用：
TreeMap、TreeSet以及JDK1.8之后的HashMap底层都用到了红黑树。
TreeMap、TreeSet以及JDK1.8的HashMap底层都用到了红黑树。
**为什么要用红黑树？**