Darbar 257 — Ugly Number Ii
Medium
Darbar · Heap
Catalog slot 257 of 548 (source id 811). Topic heap / dp based.
Solve on LeetCode: Ugly Number Ii. Do not treat this page as a statement dump.
Aligned T2T band: weeks 31–45. Start at Week 31. Full map: Darbar hub.
Pattern block: Tree and graph fluency (weeks 31-45, slots 201-280). Warmup: Tree traversals and adjacency-list graph walks. Exam: Tree+graph block with one design flavored problem.
Triangulation — Heap: Darbar speed is Top-K and scheduler problems; Forge depth is Heap invariants and adversarial streams; production artifact is Streaming Top-K / inference batching.
Evidence (cookiecutter problem_257.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
- Super Ugly Number · medium
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- Cheapest Flights Within K Stops · medium
Darbar slot 257 of Tensor-to-Tenant · Previous · Next.