Function isPalindromeFromCenter

javascript/0647-palindromic-substrings.js:128–142

(s, left, right, count = 0)

};

const isPalindromeFromCenter = (s, left, right, count = 0) => {
    const isInBounds = () => 0 <= left && right < s.length;
    while (isInBounds()) {
        /* Time O(N) */
        const isEqual = s[left] === s[right];
        if (!isEqual) break;

        count++;

        left--;
        right++;
    }

    return count;
};