Code RoomLongest palindrome linear time
HardPrep Room Coding #1183

Longest palindrome linear time

CodingAlgorithms & data structuresSenior–Staff~36 min

Given a string s, return the LENGTH of the longest palindromic substring (contiguous). Solve it in O(n) time. 1 <= len(s) <= 100000, lowercase letters. Example: 'forabccddccbafor' -> 10 ('abccddccba').

Implement
longest_palindrome_len(s: str) → int
Examples
in["forabccddccbafor"]out10
What a strong answer looks like

State your approach and its time/space complexity out loud before you optimize. Handle the edge cases (empty input, duplicates, overflow), and say why you chose this over the brute force. Green tests are the floor, not the grade.

0:00 of about 36 min
InputExpectedGot
["forabccddccbafor"]10not run yetsample