remove all Duplicate letters in a string text

removeDuplicates.cpp

/**
 * remove Duplicate letters in a text
 * @param textString
 * @return
 */
string removeDuplicates(std::string textString) {
    if (textString.begin() == textString.end()) return textString;
    auto no_duplicates = textString.begin();
    for (auto current = no_duplicates; current != textString.end();) {
        current = std::find_if(std::next(current), textString.end(), [no_duplicates](const char c) { return c != *no_duplicates; });
        *++no_duplicates = std::move(*current);;
    }
    textString.erase(++no_duplicates, textString.end());
    return textString;
}