1. string split

通常会遇到处理字符串分割步骤，按照分隔符是单字符or多个分割符

单字符分割

void split(string& input, vector<string>& output, const char& delim){
    istringstream ss(input);
    string tmp;
    while(getline(ss, tmp, delim)){
        if(tmp.size() == 0) continue;
        output.push_back(tmp);
    }

    return ;
}

多字符分割

void split(string& input, vector<string>& output, const string& delim){

    char* s = new char[input.size() + 1];
    memset(s, 0, input.size() + 1);
    strcpy(strc, str.c_str());

    char* tmpStr = strtok(s, delim.c_str());
    while(tmpStr != NULL){
        output.push_back(string(tmpStr));
        tmpStr = strtok(NULL, delim.c_str());
    }

    delete [] s;
    return ;
}