以相反的顺序打印矢量 [英] Printing vector in reverse order

问题描述

有更好的方法打印一个向量的逆向顺序，然后这样：

Is there a better way of printing a vector in reverse order then this:

#include<vector>
#include<iostream>
#include<algorithm>
using namespace std;

void print_elem(int elem)
{
    cout << elem << endl;    
}

int main()
{
    int ia[4]={1,2,3,4};
    vector<int> vec(ia,ia+4);
    reverse(vec.begin(), vec.end());
    for_each(vec.begin(),vec.end(),print_elem);
    reverse(vec.begin(), vec.end());
}

推荐答案

一个反向的双向序列，不反转元素，例如：

There are many ways to print a bidirectional sequence in reverse without reversing the elements, e.g.:

std::copy(vec.rbegin(), vec.rend(), std::ostream_iterator<int>(std::cout, "\n"));
std::reverse_copy(vec.begin(), vec.end(), std::ostream_iterator<int>(std::cout, "\n"));

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