[CodeKata] 가운데 글자 가져오기

링크

• https://programmers.co.kr/learn/courses/30/lessons/12903

참고

• https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/floor
• https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/charAt

나의 풀이

const solution = (s) => {
  const midIndex =
    s.length % 2 === 1
      ? Math.floor(s.length / 2)
      : [s.length / 2 - 1, s.length / 2];
  
  if (s.length % 2 === 1) {
    return s.charAt(midIndex);
  } else {
    return s.charAt(midIndex[0]) + s.charAt(midIndex[1]);
  }
};