[못풀었다/프로그래머스] 단속카메라

function solution(routes) {
    var answer = 1;
    let obj = {}
    routes = routes.sort((a,b)=>a[0]-b[0])
    let out = routes[0][1]

    for(let i=1;i<routes.length;i++){
        console.log(out,routes[i][0])
        if(routes[i][0]>out){
             answer++;
            out = routes[i][1]
        }if(routes[i][1]<out){
            out = routes[i][1]
        }
    }
    return answer;
}