/*  Given two strings, create a function that returns the total 
 *  number of unique characters from the combined string.
 */
int countUnique(std::string str1, std::string str2) {
	str1 += str2;
	std::sort (str1.begin(),str1.end());
//str1.resize(std::distance(str1.begin(),std::unique (str1.begin(), str1.end())));
	return std::distance(str1.begin(),std::unique (str1.begin(), str1.end()));
//	return str1.size();
}