How to Split a String in C++?

  • 时间：2020-09-09 13:16:32
  • 分类：网络文摘
  • 阅读：148 次

In C++, there is no inbuilt split method for string. It is very useful to split a string into a vector of string. We can use the following string split method to split a string into a vector or string using the stringstream class.

1
2
3
4
5
6
7
8
9

vector<string> split(const string& text) {
    string tmp;
    vector<string> stk;
    stringstream ss(text);
    while(getline(ss,tmp,' ')) {
        stk.push_back(tmp);
    }
    return stk;
}
vector<string> split(const string& text) {
    string tmp;
    vector<string> stk;
    stringstream ss(text);
    while(getline(ss,tmp,' ')) {
        stk.push_back(tmp);
    }
    return stk;
}

Example usage:

1
2
3
4
5
6
7
8

int main() {
  string str = "This is me";
  vector<string> words = split(str);
  // words = ["This", "is", "me"];
  for (const auto &n: words) {
     cout << n << endl;
  }
}
int main() {
  string str = "This is me";
  vector<string> words = split(str);
  // words = ["This", "is", "me"];
  for (const auto &n: words) {
     cout << n << endl;
  }
}

And of course, you can easily add the support for custom delimiter such as split a string by comma or colon (IP addresses):

1
2
3
4
5
6
7
8
9

vector<string> split(const string& text, char delimiter) {
    string tmp;
    vector<string> stk;
    stringstream ss(text);
    while(getline(ss,tmp, delimiter)) {
        stk.push_back(tmp);
    }
    return stk;
}
vector<string> split(const string& text, char delimiter) {
    string tmp;
    vector<string> stk;
    stringstream ss(text);
    while(getline(ss,tmp, delimiter)) {
        stk.push_back(tmp);
    }
    return stk;
}

Let’s hope that a string split function will be added to the string class in future C++ releases!

–EOF (The Ultimate Computing & Technology Blog) —

推荐阅读：
Bruteforce/BackTracking Algorithm to Split Array into Fibonacci 　 How to Avoid Paying Too Much Fee when Cashing out Bitcoin via Wi　 The Common Kodi Errors and Use of Free VPN for Linux　 Java Pattern: Use Atomic Boolean to Return Single Usage Object　 Significance of HTML and CSS in Mobile App Development　 How to Reverse Words in a String using Modern Programming Langua　 The Python Function to Retrieve the Producer Reward for Witness　 Function to Compute the Average Salary Excluding the Minimum and　 Efficient Algorithms to Compute The kth Factor of a Natural Numb　 Can We Make Arithmetic Progression From Sequence of Numbers?　
评论列表
添加评论