擦除字符串向量中前2个字符的重复项

#include <iostream>
#include <vector>
#include <unordered_set>

std::vector<std::string> eraseDuplicates(std::vector<std::string> inputVector) {
    std::vector<std::string> result;

    for (const auto& str : inputVector) {
        if (str.length() < 2) {
            result.push_back(str);
        } else {
            std::unordered_set<char> charSet;
            std::string processedStr;

            for (const auto& c : str) {
                if (charSet.find(c) == charSet.end() || charSet.size() < 2) {
                    processedStr += c;

                    if (charSet.find(c) == charSet.end()) {
                        charSet.insert(c);
                    }
                }
            }

            result.push_back(processedStr);
        }
    }

    return result;
}

int main() {
    std::vector<std::string> inputVector = {"aabbb", "ccdde", "ffgg", "hhii"};

    std::vector<std::string> result = eraseDuplicates(inputVector);

    for (const auto& str : result) {
        std::cout << str << std::endl;
    }

    return 0;
}