CodingMediumcod-g386

Subject Edit distanceLevel Mid–Senior~20 minCommon in Algorithms & data structures interviewsIndustries Software development

Question

Given two strings s and t, return True if and only if they are EXACTLY one edit distance apart. One edit means inserting, deleting, or replacing a single character. Strings equal to each other (zero edits) are NOT one edit apart. 0 <= len(s), len(t) <= 10^4.

Implement

one_edit_distance(s: str, t: str) → bool

Examples

in["ab","acb"]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.