reverse()是頭文件算法中的預定義函數。在上述頭文件中將其定義為模板。它反轉任何容器的[first，last)範圍內的元素順序。
注意：使用的範圍是[first，last)，它包含first和last之間的所有元素，包括first指向的元素，但last指向的元素。
用法:
void reverse(BidirectionalIterator first, BidirectionalIterator last) BidirectionalIterator is an iterator that can be used to access any elements of a container in both forward and backward direction.
例子：
Input: 10 11 12 13 14 15 16 17 Output:10 11 12 13 14 17 16 15 Explanation: reverse(v.begin() + 5, v.begin() + 8); In the above function, input we have applied reverse() on the vector from index 5 to index 7. Therefore when we display the vector we get reverse order from index 5 to index 7.
// CPP program to illustrate
// std::reverse() function of STL
#include<iostream>
#include<algorithm>
#include<vector>
using namespace std;
int main()
{
vector <int> v ;
// Inserting elements in vector
for (int i = 0; i < 8; i++)
v.push_back(i+10);
cout << "Reverse only from index 5 to 7 in array:\n";
// Reversing elements from index 5 to index 7
reverse(v.begin() + 5, v.begin() + 8);
// Displaying elements of vector
vector <int>::iterator it;
for (it = v.begin(); it != v.end(); it++)
cout << (*it) << " ";
// Reversing directly from beginning to end
cout << "\nReverse full array:\n";
int a[] = {4, 5, 6, 7};
std::reverse(std::begin(a), std::end(a));
// Print the array
std::cout << a[0] << a[1] << a[2] << a[3] << '\n';
return 0;
} 輸出：
Reverse only from index 5 to 7 in array: 10 11 12 13 14 17 16 15 Reverse full array: 7654
相關用法
注：本文由純淨天空篩選整理自 std::reverse() in C++。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。