#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
using namespace std;
 
vector<string> textLines{"AAA", "AAA", "BBB", "CCC"};
 
int main()
{
	sort(textLines.begin(), textLines.end());
 
	vector<string> duplicates;
	auto iter = unique(textLines.begin(), textLines.end(), [&duplicates](auto& first, auto& second) -> bool {
		if (first == second)
		{
			duplicates.push_back(second);
			return true;
		}
 
		return false;
	});
	textLines.resize(distance(textLines.begin(), iter));
 
	std:: cout << "Filtered:" << std::endl;
	for (auto& t : textLines)
	{
		std::cout << t << std::endl;
	}
 
	std:: cout << "Duplicates:" << std::endl;
	for (auto& t : duplicates)
	{
		std::cout << t << std::endl;
	}
 
	return 0;
}

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