CodingMediumcod-g088

Subject Two pointersLevel Mid–Senior~20 minCommon in Algorithms & data structures interviewsIndustries Software development

Question

Given a lowercase string s, return True if it can be made into a palindrome by deleting at most one character (deleting zero characters is allowed, so any palindrome qualifies). The string length is at least 1.

Implement

valid_palindrome_one_del(s: str) → bool

Examples

in["aba"]outtrue

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.

Learn the concepts

Vibe coding: describe the solution in plain language (or narrate it) and the coach grades your approach. Generating runnable code from your description is coming next.

Run or narrate your approach, then ask the coach.