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集合的特点-哈喽酷你-51CTO博客
source link: http://blog.51cto.com/13569660/2068634
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ArrayList的查询效率比较高，增删动作的效率比较差，适用于查询比较频繁，增删动作较少的元素管理的集合。ArrayList基础object[]LinkedList的查询效率低，但是增删效率很高。适用于增删动作的比较频繁，查询次数较少的元素管理集合。LinkedList链表接口Collection|_Set||_SortedSet||_ListMap|____SortedMapCollectio
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