인프런 커뮤니티 질문&답변

function solution (str)

{

    let strArr = str.split("");

    let length = strArr.length;

    let answer = '';

    answer =  length/2 !== Math.round(length/2) ? strArr[Math.round(length/2)-1] : strArr[length/2 -1] + strArr[length/2];

    return answer;

}  
console.log(solution("good"));