0125-valid-palindrome.ts

function isPalindrome(s: string): boolean {
    const array = s
        .toLowerCase()
        .replace(/[^A-Za-z0-9]/g, '')
        .replace(/\s/g, '')
        .split('');

    for (let i = 0; i < array.length; i++) {
        const first = array[i];
        const second = array[array.length - 1 - i];

        if (first !== second) {
            return false;
        }
    }
    return true;
}