Darbar 290 — Longest Happy String

Medium

Darbar · Heap

Catalog slot 290 of 548 (source id 730). Topic heap / simple heap.

Solve on LeetCode: Longest Happy String. 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: Data-structure mastery (weeks 46-60, slots 281-360). Warmup: Standard-library structure drills. Exam: Structure-selection exam with 2-3 advanced problems.

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_290.md)

1. Attempt log (approaches that failed)
2. Final complexity (time and space)
3. One mistake corrected
4. Production concept this slot reinforces

Personal dates and the CSV tracker stay in the learner journal.

Same subtopic

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• Seat Reservation Manager · medium
• Remove Stones To Minimize The Total · medium
• Top K Frequent Words · medium

Heap index · Darbar hub

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