[Algorithm] 프로그래머스 코테 연습 전화번호 목록 풀이 with C++

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

using namespace std;

bool solution(vector<string> phone_book) {
    sort(phone_book.begin(), phone_book.end());
    
    for(int i=0; i<phone_book.size()-1; i++){
        if(phone_book[i] == phone_book[i+1].substr(0, phone_book[i].size())){
            return false;
        }
    }
    
    return true;
}