[c++] 단속카메라 (그리디, 탐욕법)

#include <string>
#include <algorithm>
#include <vector>
using namespace std;
 
int solution(vector<vector<int>> routes) {
    int answer = 1;
    sort(routes.begin(),routes.end());
    int camera=routes[0][1];
    for(int i=1;i<routes.size();i++){
        if(camera>=routes[i][0]){
            camera=min(routes[i][1],camera);
        }else{
            answer++;
            camera=routes[i][1];
        }
    }
    
    return answer;
}

출처: https://school.programmers.co.kr/learn/courses/30/lessons/42884#