[Level1] 숫자 문자열과 영단어 (C++)

#include <string>
#include <vector>
using namespace std;

int solution(string s) {
    vector<pair<string, string>> v;
    v.push_back({"zero", "0"});
    v.push_back({"one", "1"});
    v.push_back({"two", "2"});
    v.push_back({"three", "3"});
    v.push_back({"four", "4"});
    v.push_back({"five", "5"});
    v.push_back({"six", "6"});
    v.push_back({"seven", "7"});
    v.push_back({"eight", "8"});
    v.push_back({"nine", "9"});
    
    for(auto num : v) {
        while(s.find(num.first) != string::npos) {
            s.replace(s.find(num.first), num.first.length(), num.second);
        }
    }

    return stoi(s);
}

 

• regex : https://en.cppreference.com/w/cpp/regex

Regular expressions library (since C++11) - cppreference.com

#include <string>
#include <regex>
using namespace std;

int solution(string s) {
    s = regex_replace(s, regex("zero"), "0");
    s = regex_replace(s, regex("one"), "1");
    s = regex_replace(s, regex("two"), "2");
    s = regex_replace(s, regex("three"), "3");
    s = regex_replace(s, regex("four"), "4");
    s = regex_replace(s, regex("five"), "5");
    s = regex_replace(s, regex("six"), "6");
    s = regex_replace(s, regex("seven"), "7");
    s = regex_replace(s, regex("eight"), "8");
    s = regex_replace(s, regex("nine"), "9");    
    
    return stoi(s);
}