countUnique

gistfile1.cpp

#include <iostream>
#include <set>
#include <vector>

int countUnique(const std::vector<std::string> &a) {
	std::set<std::string> uniqueStrings;
	for (std::vector<std::string>::const_iterator itr = a.begin(); itr != a.end(); itr++) {
		if (uniqueStrings.end() == uniqueStrings.find(*itr)) {
			uniqueStrings.insert(*itr);
		}
	}
	return uniqueStrings.size();
}

int main(int argc, char *argv[]) {
	std::vector<std::string> test;
	test.push_back("zsddf");
	test.push_back("zsd");
	test.push_back("zsddf");
	test.push_back("zsd");
	test.push_back("z");
	std::cout << countUnique(test);
}