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callback: jQuery110208448685595287795_1588213215377
fpdm: 011001600211
fphm: 12412412
r: 0.5140375363656053
v: V2.0.03_001
nowtime: 1588215652582
publickey: 0E4A6CDDAFCC4687986D13F2027E2B50
key…
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`SortedSet.map` in 2.12 returns a `Set` if it cannot find an implicit Ordering. To keep this behavior in 2.13, you can use `unsorted`. However, this method is not available in 2.12.
```scala
case …
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几种常用的 Java 数据结构(集合)
List , Set, Map都是接口,前两个继承至Collection接口,Map为独立接口
Set下有HashSet,LinkedHashSet,TreeSet
List下有ArrayList,Vector,LinkedList
Map下有Hashtable,LinkedHashMap,HashMap,TreeMap
Collection接口下…
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Bom dia Camila! Parabéns pelo material e pela didática.
Na tarefa Lista de Alunos tem como parte da tarefa a implementação do método exibirAlunos() mas quando vi no teu código não encontrei lá. Eu ha…
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1. В задании 8.1 ты так и не сделал табличку. Значения, которые хранятся в твоей коллекции должны не просто выводится на экран а быть в форме таблички.
2. В задании 8.2 ты использовал `TreeSet` и пере…
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### 第一章 集合介绍
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The budget creation step 2 should be an interactive form for creating ledgers.
The left side of the screen shows the tree structure of our budgeting project.
The right side allows us to create a l…
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Cabinet needs to be able to get Items out of any Folder (or even subfolder) and put them into new Folders.
Therefore, Folder needs to know about all Items it contains, even in its subfolders.
And, F…
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From [their docs](https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/Collection.html#removeAll(java.util.Collection)) (emphasis mine):
> Throws:
> ...
> `NullPointerException` -…
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给定两个数组,编写一个函数来计算它们的交集。
示例 1:
```
输入: nums1 = [1,2,2,1], nums2 = [2,2]
输出: [2]
```
示例 2:
```
输入: nums1 = [4,9,5], nums2 = [9,4,9,8,4]
输出: [9,4]
```
说明:
输出结果中的每个元素一定是唯一的。
我们可以不考虑输出结…