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Java Review (二十八、集合----- Queue 集合）

文章目录PriorityQueue 实现类Deque 接口与 ArrayDeque 实现类各种线性表的性能分析队列（Queue）是一种经常使用的集合。Queue实际上是实现了一个先进先出（FIFO：First In First Out）的有序表。它和List的区别在于，List可以在任意位置添加...

Java Review (二十六、集合----- Set 集合）

文章目录HashSet 类元素比较LinkedHashSet 类TreeSet 类自然排序定制排序EnumSet 类各 Set 实现类的性能分析 Set 集合，它类似于一个罐子，程序可以依次把多个对象"丢进" Set 集合，而 Set集合通常不能记住元素的添加顺序。 Set 集合与 Coll...

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Java Review (二十三、集合-----概述）

文章目录 Java 最初版本只为最常用的数据结构提供了很少的一组类：Vector、 Stack、Hashtable、BitSet 与 Enumeration 接口。随着 Java SE 1.2 的问世，设计人员感到是推出一组功能完善的数据结构的时机了。面对一大堆相互矛盾的设计策略，他们希望让类库规模...

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