转换向量< int>到一个字符串 [英] Convert a vector<int> to a string

问题描述

我有一个 vector< int> 容器，该容器具有整数（例如{1,2,3,4}），我想转换为表格

I have a vector<int> container that has integers (e.g. {1,2,3,4}) and I would like to convert to a string of the form

"1,2,3,4"

在C ++中最干净的方法是什么？
在Python中，这就是我的操作方式：

What is the cleanest way to do that in C++? In Python this is how I would do it:

>>> array = [1,2,3,4]
>>> ",".join(map(str,array))
'1,2,3,4'

推荐答案

绝对不如Python优雅，但没有什么比C ++中的Python优雅。

Definitely not as elegant as Python, but nothing quite is as elegant as Python in C++.

使用 stringstream ...

#include <sstream>
//...

std::stringstream ss;
for(size_t i = 0; i < v.size(); ++i)
{
  if(i != 0)
    ss << ",";
  ss << v[i];
}
std::string s = ss.str();

您还可以使用 std :: for_each 代替。

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