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Palindrome Interview Question Solution JavaScript

Hello Dev World Blog on December 31, 2020

Another popular interview question is the palindrome test. These solutions are for simple 1 word palindromes. For more complicated palindromes with...
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Søren Hougaard Mulvad •

The code for solution 3 is not correct. As it is right now, it will only compare the very first and last character in the string. Therefore there will be a lot of false positives. You should do something along the lines of

function isPalindrome(stringToCheck) {
    const strLower = stringToCheck.toLowerCase();
    for (let i = 0; i < Math.floor(strLower.length/2); i++) {
        if (strLower.charAt(i) !== strLower.charAt(strLower.length - i - 1)) {
            return false;
        }
    }
    return true;
}
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Hello Dev World Blog •

shoot thank you for that catch i messed up in my testing when i was trying to make it smaller lol has been corrected with an explanation why it needs to be that way :)