How to minimize the execution time?

Question

I'm checking if the given string is palindrom or not, but the execution time is too long.

My code is below:

function checkPalindrome(inputString) {
  for (let i = 0; i < (inputString.length - 1) / 2; i++) {
    const a = inputString[i];
    const b = inputString.split("").reverse().join("")[i];
    if (a !== b) {
      return false;
    }
    continue;
  }
  return true;
}
const palindrome = checkPalindrome("abba");
console.log(palindrome);

How can I optimize the code in order to reduce it's execution time?

Answer 1

Why you are iterating each letter, When you can reverse it using array methods?

function checkPalindrome(inputString) {
  return inputString === inputString.split("").reverse().join("");
}

let palindrome = checkPalindrome("abba");
console.log(palindrome);

palindrome = checkPalindrome("random");
console.log(palindrome);

palindrome = checkPalindrome("abba isi abba");
console.log(palindrome);