오늘의 공부

programmers.co.kr/learn/courses/30/lessons/17682

int solution(string dartResult) {
    int answer = 0;
    int result_size = dartResult.size();
    
    vector<int> cal_num;
    string temp_s = "";
    for(int i=0;i<result_size;++i)
    {
        if(dartResult[i] != 'S' && dartResult[i] != 'D' && dartResult[i] != 'T'
          && dartResult[i] != '*' && dartResult[i] != '#')
        {
            temp_s += dartResult[i];
        }
        else
        {
           switch(dartResult[i])
           {
               case 'S':{
                   int num = stoi(temp_s);
                   temp_s = "";
                   int cal = num;
                   cal_num.push_back(cal);
               }
                   break;
               case 'D':{
                   int num = stoi(temp_s);
                   temp_s = "";
                   int cal = num * num;
                   cal_num.push_back(cal);
               }
                   break;
               case 'T':{
                   int num = stoi(temp_s);
                   temp_s = "";
                   int cal = num * num * num;
                   cal_num.push_back(cal);
               }
                   break;
               case '*':{
                   int idx = cal_num.size();
                   if(idx > 0)
                   {
                       cal_num[idx-1] *=2;
                       cal_num[idx-2] *=2;
                   }
                   else
                   {
                       cal_num[0] *= 2;
                   }}
                   break;
               case '#':
                   {
                   int idx = cal_num.size();
                   if(idx > 0)
                   {
                       cal_num[idx-1] *= -1;
                   }
                   else
                   {
                       cal_num[0] *= -1;
                   }
                   }
                   break;
           }
        }
     
    }
  
    for(int i=0;i<cal_num.size();++i)
    {
        answer += cal_num[i];
    }
    return answer;
}

tech.kakao.com/2017/09/27/kakao-blind-recruitment-round-1/

초반에 감을 잘못 잡아서 헤매긴 했지만 정답률이 73%나 되는 쉬운 문제였다.