const isLengthEven = (str) => str.length % 2 == 0;
// 조건문 캡슐화를 위해 따로 뺀 함수
const solution = (s) => {
let middleIndex = Math.floor(s.length / 2);
if (isLengthEven(s)) {
return s[middleIndex - 1] + s[middleIndex];
}
return s[middleIndex];
};
function solution(s) {
const middleIndex = Math.floor(s.length / 2);
return s.length % 2 == 0
? s[middleIndex - 1] + s[middleIndex]
: s[middleIndex];
}