[C++知识库]c++下字符串分割函数split实现

简单来说就是使用vector容器，以字符串为分界线，分割后的字符串以string保存在vector中。

vector<string> split(string st, char sign){
    vector<string> str;
    
    for(int i = 0; i < st.length(); i++){
        string temp="";
        while(st[i]!=sign && i <st.length()){
            temp += st[i];
            i++;
        }
        str.push_back(temp);
    }
    return str;
}

完整代码

#include<iostream>
#include<vector>
#define INF 9999999
#define MAXN 1000
#include<algorithm>
using namespace std;
#include<vector>

vector<string> split(string st, char sign){
    vector<string> str;

    for(int i = 0; i < st.length(); i++){
        string temp="";
        while(st[i]!=sign && i <st.length()){
            temp += st[i];
            i++;
        }
        str.push_back(temp);
    }
    return str;
}


int main(){
     string st;
     st = " 123, 456";
     vector<string> str = split(st,',');

     for(int i = 0; i < str.size(); i++){
         cout << str[i] <<endl;
     }


     return 0;
}