전화번호 목록

https://programmers.co.kr/learn/courses/30/lessons/42577

코딩테스트 연습 - 전화번호 목록

 

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

using namespace std;

bool solution(vector<string> phone_book) 
{
    bool answer = true;
    int Max_size = 0;
    map<string,int> mp;
  
    
    for ( auto it = phone_book.begin(); it != phone_book.end(); it++)
    {
        mp[*it];
    }

    
    for ( auto it = phone_book.begin(); it != phone_book.end(); it++)
    {
        for(int i = 1 ; i < (*it).size();i++)
        {
            if(mp.find((*it).substr(0,i)) != mp.end()) // 찾음
            {
                //cout << (*it);
                return false;
            }
        }
    }
    
    return answer;
}