跳过托管字符串中行的最简单方法是什么？^ VC++

#include <msclr/marshal_cppstd.h>

void SkipLine(System::String^ input, int skipLineNumber)
{
    // 将托管字符串转换为标准字符串
    std::string nativeInput = msclr::interop::marshal_as<std::string>(input);

    // 使用换行符分割字符串
    std::vector<std::string> lines;
    std::string line;
    std::istringstream iss(nativeInput);
    while (std::getline(iss, line))
    {
        lines.push_back(line);
    }

    // 跳过指定行号的行
    if (skipLineNumber > 0 && skipLineNumber <= lines.size())
    {
        // 输出除指定行外的所有行
        for (size_t i = 0; i < lines.size(); ++i)
        {
            if (i != static_cast<size_t>(skipLineNumber - 1))
            {
                Console::WriteLine(msclr::interop::marshal_as<System::String^>(lines[i]));
            }
        }
    }
}

#include <regex>

void SkipLineUsingRegex(System::String^ input, int skipLineNumber)
{
    // 将托管字符串转换为标准字符串
    std::string nativeInput = msclr::interop::marshal_as<std::string>(input);

    // 使用正则表达式匹配每一行
    std::regex lineRegex(R"((.*\n?))");
    std::smatch match;
    std::string::const_iterator searchStart(nativeInput.cbegin());
    int currentLineNumber = 0;

    while (std::regex_search(searchStart, nativeInput.cend(), match, lineRegex))
    {
        currentLineNumber++;
        if (currentLineNumber != skipLineNumber)
        {
            Console::WriteLine(msclr::interop::marshal_as<System::String^>(match.str()));
        }
        searchStart = match.suffix().first;
    }
}

void SkipLineDirectly(System::String^ input, int skipLineNumber)
{
    array<System::String^>^ lines = input->Split(
        gcnew array<System::Char>{'\n'},
        System::StringSplitOptions::None);

    for (int i = 0; i < lines->Length; ++i)
    {
        if (i != skipLineNumber - 1)
        {
            Console::WriteLine(lines[i]);
        }
    }
}