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[docx fix]移除不必要的空格，Object[ ] -> Object[] #1844

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Snailclimb merged 1 commit into from
Oct 16, 2022
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[docx fix]移除不必要的空格，Object[ ] -> Object[] #1844

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6 changes: 3 additions & 3 deletions docs/java/collection/java-collection-questions-01.md
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Expand Up @@ -80,8 +80,8 @@ Java 集合框架如下图所示：

### ArrayList 和 Vector 的区别?

- `ArrayList` 是 `List` 的主要实现类，底层使用 `Object[ ]`存储，适用于频繁的查找工作，线程不安全 ；
- `Vector` 是 `List` 的古老实现类，底层使用`Object[ ]` 存储，线程安全的。
- `ArrayList` 是 `List` 的主要实现类，底层使用 `Object[]`存储，适用于频繁的查找工作，线程不安全 ；
- `Vector` 是 `List` 的古老实现类，底层使用`Object[]` 存储，线程安全的。

### ArrayList 与 LinkedList 区别?

Expand Down Expand Up @@ -333,4 +333,4 @@ Output：
- `PriorityQueue` 是非线程安全的，且不支持存储 `NULL` 和 `non-comparable` 的对象。
- `PriorityQueue` 默认是小顶堆，但可以接收一个 `Comparator` 作为构造参数，从而来自定义元素优先级的先后。

`PriorityQueue` 在面试中可能更多的会出现在手撕算法的时候，典型例题包括堆排序、求第K大的数、带权图的遍历等，所以需要会熟练使用才行。
`PriorityQueue` 在面试中可能更多的会出现在手撕算法的时候，典型例题包括堆排序、求第K大的数、带权图的遍历等，所以需要会熟练使用才行。