stl向量_如何在C ++ STL中反转向量元素？

矫情吗；* 2023-03-05 12:39 45阅读 0赞

stl向量

Given a vector and we have to reverse their element using C++ STL program.

给定一个向量，我们必须使用C ++ STL程序反转它们的元素。

## 反转向量 **(**Reverse a vector **)** ##

To **reverse vector elements**, we can use **reverse() function** which is defined in **<algorithm>** header in C++ standard template library. It accepts the range of the iterators in which reverse operation to be performed and reverses the elements between the given range.

要**反转矢量元素** ，我们可以使用**reverse()函数** ，该**函数**在C ++标准模板库的**<algorithm>**标头中定义。 它接受要执行反向操作的迭代器的范围，并反转给定范围之间的元素。

**Note:** To use vector – include <vector> header, and to use **reverse() function** – include <algorithm> header or we can simply use <bits/stdc++.h> header file.

**注意：**要使用vector –包含<vector>头文件，而要使用**reverse()函数** –包含<algorithm>头文件，或者我们可以简单地使用<bits / stdc ++。h>头文件。

**Syntax:**

**句法：**

reverse(iterator start, iterator end);

Here, start\_position, iterator end\_position are the iterators pointing to the start and end elements in a container to be reversed.

在这里， start\_position，迭代器end\_position是指向容器中要反转的开始和结束元素的迭代器。

**Example:**

**例：**

Input:
        vector<int> v1{ 10, 20, 30, 40, 50, 25, 15 };
    
        reverse(v1.begin(), v1.end());
        
        Output:
        15, 25, 50, 40, 30, 20, 10

### C ++ STL程序反转向量元素 **(**C++ STL program to reverse vector elements **)** ###

//C++ STL program to reverse vector elements 
    #include <iostream>
    #include <algorithm>
    #include <vector>
    using namespace std;
    
    int main()
    {
        
        //vector
        vector<int> v1{
         10, 20, 30, 40, 50 };
    
        //printing elements
        cout << "before reversing vector elements..." << endl;
        for (int x : v1)
            cout << x << " ";
        cout << endl;
    
        //reversing vector's all elements
        reverse(v1.begin(), v1.end());
    
        //printing elements
        cout << "after reversing vector elements..." << endl;
        for (int x : v1)
            cout << x << " ";
        cout << endl;
    
        return 0;
    }

**Output**

**输出量**

before reversing vector elements...
    10 20 30 40 50
    after reversing vector elements...
    50 40 30 20 10

> 翻译自: [https://www.includehelp.com/stl/reverse-vector-elements.aspx][https_www.includehelp.com_stl_reverse-vector-elements.aspx]

stl向量

[https_www.includehelp.com_stl_reverse-vector-elements.aspx]: https://www.includehelp.com/stl/reverse-vector-elements.aspx