简化以下程序，将两个 for 循环都替换为标准的 C++ 算法

#include <string>
#include <vector>
#include <iostream>

int main()
{
std::vector<std::string> strings;
strings.push_back("Boost");
strings.push_back("C++");
strings.push_back("Libraries");

std::vector<int> sizes;

for (std::vector<std::string>::iterator it = strings.begin(); it != strings.end(); ++it)
sizes.push_back(it->size());

for (std::vector<int>::iterator it = sizes.begin(); it != sizes.end(); ++it)
std::cout << *it << std::endl;
}

#include "boost/bind.hpp"
#include "boost/function.hpp"
#include "boost/lambda/lambda.hpp"
#include <algorithm>
#include <functional>
#include <vector>
#include <iostream>
#include <string>

int main()
{
typedef std::vector<std::string> type;
std::vector<std::string> strings;
strings.push_back("Boost");
strings.push_back("C++");
strings.push_back("Libraries");

std::vector<int> sizes(strings.size());
std::transform (strings.begin(),strings.end(), sizes.begin(), boost::bind(&std::string::size,_1));
std::for_each(sizes.begin(), sizes.end(), std::cout << boost::lambda::_1 << "\n");
}