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#include <iostream>
#include <string>
#include <vector>
#include <map>
std::vector<std::string> remove_even_strings(std::vector<std::string>& ref);
void print_vector(std::vector<std::string> & ref);
int main()
{
std::vector<std::string> vec;
vec.push_back("abc");
vec.push_back("123");
vec.push_back("456");
vec.push_back("fgh");
vec.push_back("ppp");
vec.push_back("123");
vec.push_back("fgh");
vec.push_back("fgh");
vec.push_back("abc");
vec.push_back("ppp");
print_vector(vec);
auto result = remove_even_strings(vec);
print_vector(result);
return 0;
}
std::vector<std::string> remove_even_strings(std::vector<std::string> & ref)
{
std::vector<std::string> result;
std::map<std::string, size_t> srch;
for (auto & r : ref)
{
auto t = srch.insert(std::make_pair(r, 1));
if (t.second == false)
{
srch.at(r) = srch.at(r) + 1;
}
}
for (auto & r : ref)
{
if (srch.at(r) % 2 == 1)
{
result.push_back(r);
}
}
return result;
}
void print_vector(std::vector<std::string> & ref)
{
for (auto & r : ref)
{
std::cout << r << std::endl;
}
std::cout << "----------" << std::endl;
}
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