getLongestPalindrom
12345678910111213141516171819202122
function isPalindrome(s, i, l) {
for (let j = i, k = i + l - 1, h = Math.floor(l / 2); h > 0; h--, j++, k--) {
if (s[j] !== s[k]) {
return false;
}
}
return true;
}
function getLongestPalindrome(s) {
let palindrome = s[0];
for (let i = 0, n = s.length, m = n; i < n - 1; i++, m--) {
for (let l = m; l > palindrome.length; l--) {
if (isPalindrome(s, i, l)) {
palindrome = s.substring(i, i + l);
}
}
}
return palindrome;
}
console.log(getLongestPalindrome("bannana"));
JavaScript
INFO