CodingEasycod-g1030

Subject Networking percent decodeLevel Entry–Mid~15 minCommon in Networking & APIs interviewsIndustries Software development

Question

Percent-decode a URL-encoded string. Sequences of the form %XX (two hex digits) decode to the corresponding byte; consecutive byte escapes that form a UTF-8 multibyte sequence must decode to the correct Unicode character. Characters that are not part of an escape are passed through unchanged. Return the decoded string.

Implement

percent_decode(s: str) → str

Examples

in["hello%20world"]out"hello world"

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.