CodingEasycod-g1400

Subject StringsLevel Entry–Mid~10 minCommon in Algorithms & data structures interviewsIndustries Software development

Question

An audit script fingerprints ticket IDs by summing the digit characters they contain. Given a string that may mix letters, digits, and punctuation, return the sum of all digit characters as a number. Return 0 if there are no digits. For example, 'ord-42x9' contains 4, 2, and 9, so the answer is 15.

Implement

digit_sum(s: str) → int

Examples

in["ord-42x9"]out15

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.