[프로그래머스 2] H-Index (C/C++)

#include <string>
#include <vector>
#include <algorithm>
using namespace std;
 
int solution(vector<int> citations) 
{
    sort(citations.begin(), citations.end());
    
    for(int k = citations[citations.size()-1]; k >= 0; k--)
    {
        int cnt = 0;
        
        for(int i = citations.size()-1; i >= 0; i--)
        {
            if(k <= citations[i])
            {
                cnt++;
            }
            else
            {
                break;
            }
        }   
        
        if(cnt >= k && citations.size()-cnt <= k)
        {
            return k;
        }
    }
}