[프로그래머스][C++] 오픈채팅방

 

https://programmers.co.kr/learn/courses/30/lessons/42888

코딩테스트 연습 - 오픈채팅방

 

글쓴이의 답

개인적인 풀이 임으로

이것보다 더 좋은 알고리즘은 많음...

이렇게도 풀이하는구나.. 공유하기 위해 올림...

#include <string>
#include <vector>
#include <iostream>
#include <sstream>
#include <map>

using namespace std;

vector<string> split(string plane, char target){
    string temp;
    istringstream saveString(plane);
    
    vector<string> result;
    
    while(getline(saveString, temp, target)){
        result.push_back(temp);
    }
    
    return result;
    
}


int makeKeyValue(vector<string> temp, map<string, string> &uid_name_match){    
    
    if ("Enter" == temp[0] || "Change" == temp[0]){
        uid_name_match[temp[1]] = temp[2];
    }    
    
    return 0;
}


int changeString(vector<string> temp, vector<string> &id_Save, vector<string> &inOut_Save){
        
    if ("Enter" == temp[0]){             
        inOut_Save.push_back("님이 들어왔습니다.");
        id_Save.push_back(temp[1]);
    }
    else if("Leave" == temp[0]){
        inOut_Save.push_back("님이 나갔습니다.");
        id_Save.push_back(temp[1]);
    }    
    
    return 0;
}


vector<string> solution(vector<string> record) {
    vector<string> answer;
    vector<string> id_Save;
    vector<string> inOut_Save;
    map<string, string> uid_name_match;
    
    for(int i=0; i < record.size(); i++){
        string temp = record[i];
        vector<string> splitResult = split(temp, ' ');        
        makeKeyValue(splitResult, uid_name_match);
        changeString(splitResult, id_Save, inOut_Save);        
    }    
    
    for(int i=0; i < inOut_Save.size(); i++){       
        answer.push_back(uid_name_match[id_Save[i]] + inOut_Save[i]);        
    }   
    
    return answer;
}

 

꾸준히 하다보면 실력이 늘겠지..