[分割字符串] #split #c++

split.cpp

#include <string>
#include <vector>
#include <iostream>

using namespace std;

void split(const string &s, vector<string> &tokens, const string &delimiters = " ") {
    string::size_type lastPos = s.find_first_not_of(delimiters, 0);
    string::size_type pos = s.find_first_of(delimiters, lastPos);
    while (string::npos != pos || string::npos != lastPos) {
        tokens.push_back(s.substr(lastPos, pos - lastPos)); // use emplace_back after C++11
        lastPos = s.find_first_not_of(delimiters, pos);
        pos = s.find_first_of(delimiters, lastPos);
    }
}

int main() {
    string s1 = "1 2 3 4 5";
    vector<string> field;
    split(s1, field);

    for (auto &i: field) {
        cout << i << endl;
    }

    string s2 = "1,2,3,4,5";
    field = vector<string>();
    split(s2, field);

    for (auto &i: field) {
        cout << i << endl;
    }

    return 0;
}