Darbar 351 — Add Digits
Easy
Darbar · Math
Catalog slot 351 of 548 (source id 1553). Topic math / number theory.
Solve on LeetCode: Add Digits. Do not treat this page as a statement dump.
Aligned T2T band: weeks 7–30. Start at Week 7. Full map: Darbar hub.
Pattern block: Data-structure mastery (weeks 46-60, slots 281-360). Warmup: Standard-library structure drills. Exam: Structure-selection exam with 2-3 advanced problems.
Evidence (cookiecutter problem_351.md)
- Attempt log (approaches that failed)
- Final complexity (time and space)
- One mistake corrected
- Production concept this slot reinforces
Personal dates and the CSV tracker stay in the learner journal.
Same subtopic
- Find Greatest Common Divisor Of Array · easy
- X Of A Kind In A Deck Of Cards · easy
- Simplified Fractions · medium
- Number Of Pairs Of Interchangeable Rectangles · medium
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