@[Micro_Seven](/user/291358) 不谢
by yaoyunhan181 @ 2019-12-16 12:16:27
@[hly1204](/user/242973) 请问左闭右开区间是什么啊
by nkinclude @ 2019-12-16 12:30:58
```cpp
sort(_RandomAccessIterator __first, _RandomAccessIterator __last)
{
void std::sort<...>(__gnu_cxx::__normal_iterator<...>, __gnu_cxx::__normal_iterator<...>)
+2 overloads
@[brief](/user/285695) Sort the elements of a sequence.
@ingroup sorting_algorithms
@param __first An iterator.
@param __last Another iterator.
@return Nothing.
Sorts the elements in the range @p [__first,__last) in ascending order,
such that for each iterator @e i in the range @p [__first,__last-1),
*(i+1)<*i is false.
The relative ordering of equivalent elements is not preserved, use
@p stable_sort() if this is needed.
```
by Cloudflare @ 2019-12-16 12:41:27
@[nkinclude](/user/186182)
>$不会的题先百度$
>
>```百度一下,你就知道```
>
>----$Oier$行动守则
-------------------
$Let's $ $Baidu! $
- [全球最大的中文搜索引擎、致力于让网民更便捷地获取信息，找到所求。百度超过千亿的中文网页数据库，可以瞬间找到相关的搜索结果。 ](https://www.baidu.com/)
- [1百度_百度百科](https://baike.baidu.com/item/%E7%99%BE%E5%BA%A6/6699#viewPageContent)
- [2百度_百度百科](https://baike.baidu.com/item/%E7%99%BE%E5%BA%A6/22343833#viewPageContent)
- [3百度_百度百科](hhttps://baike.baidu.com/item/%E7%99%BE%E5%BA%A6/23566127#viewPageContent)
----------
> [区间](https://baike.baidu.com/item/区间/1273117?fr=aladdin#3)
>
>$$ -- 百度 $$
------------
$[a,b]$ 为闭区间
```
[0,10]={0,1,2,3,4,5,6,7,8,9,10}
```
---------
$(a,b)$ 为开区间
```
(0,10)={1,2,3,4,5,6,7,8,9}
```
-----------
$[a,b)$是左闭右开的
```
[0,10)={0,1,2,3,4,5,6,7,8,9}
```
```cpp
//[a,b)相当于
for (int i=a;i<b;i++);
```
by jijidawang @ 2019-12-16 20:00:52