C++字符串分割

C++进行字符串分割

1 按照单个字符分隔字符串

#include 
#include 
#include 

using namespace std;

vector<string> split(string s, char delim){
    vector<string> v;
    stringstream stringstream1(s);
    string tmp;
    while(getline(stringstream1, tmp, delim)){
        v.push_back(tmp);
    }
    return v;
}


int main(){

    string s = "1[2[5[8[9][]";
    vector<string> v = split(s, '[');
    for(string tmp:v){
        cout << tmp << " ";
    }
    return 0;
}

/home/hejinyang/.CLion2016.2/system/cmake/generated/mypro01-f76d0ccf/f76d0ccf/Debug/mypro01
1 2 5 8 9] ] 
Process finished with exit code 0

2 按照一个字符串整体分隔

vector<string> split(string s, string delim) {
    /**
     * @s :要分隔的字符串
     * @delim : 分隔符
     * 功能: 按照delim整体分隔字符串s
     * 例: "[1111][222][333]"  delim为 '][' --->{'[1111', '222', '333]'}
     */
    vector<string> v;
    int loc;
    while ((loc = s.find(delim)) != string::npos) {
        if (loc != 0){
            v.push_back(s.substr(0, loc));
        }
        s = s.substr(loc + delim.size());
    }

    if (s.size() > 0) {
        v.push_back(s);
    }
    return v;
}

3 按照一个字符串中的每个字符分隔字符串

vector<string> split(string s, string delim) {
    /**
     * @s :要分隔的字符串
     * @delim : 分隔符
     * 功能: 按照delim里的每个字符分隔字符串s
     * 例: "[1111][222][333]"  delim为 '][' --->{'1111', '222', '333'}
     */
    vector<string> v;
    int loc;
    while ((loc = s.find_first_of(delim)) != string::npos) {
        if (loc != 0){
            v.push_back(s.substr(0, loc));
        }

        s = s.substr(loc + 1);
    }

    if (s.size() > 0) {
        v.push_back(s);
    }
    return v;
}