[프로그래머스 Lv.1] k번째 수

function solution(array, commands) {
    let answer = [];
    
    for(var i=0; i<commands.length; i++){
        let list = array.slice(commands[i][0]-1, commands[i][1]).sort((a,b)=>(a - b));
        answer.push(list[commands[i][2]-1]);
    }

    return answer;
}