A 강조하기.js

function solution(myString) {
  let answer = "";
  for (let i = 0; i < myString.length; i++) {
    if (myString[i] === "a") {
      answer += myString[i].toUpperCase();
    } else if (myString[i] === "A") {
      answer += myString[i];
    } else {
      answer += myString[i].toLowerCase();
    }
  }
  return answer;
}