Code RoomLongest palindrome length
EasyPrep Room Coding #646

Longest palindrome length

CodingAlgorithms & data structuresEntry–Mid~11 min

Given a string of letters (case-sensitive), you may rearrange any subset of them to form a palindrome. Return the length of the longest palindrome you can build. Example: 'abccccdd' gives 7, e.g. 'dccaccd'. A single leftover letter may sit in the middle, but at most one.

Implement
longest_palindrome_length(letters: str) → int
Examples
in["abccccdd"]out7
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 11 min
InputExpectedGot
["abccccdd"]7not run yetsample