Darbar 278 — Car Pooling

Medium

Darbar · Heap

Catalog slot 278 of 548 (source id 799). Topic heap / prefix sum.

Solve on LeetCode: Car Pooling. 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.

Also filed under: heap / prefix sum.

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_278.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

• Find Kth Largest Xor Coordinate Value · medium
• Get Biggest Three Rhombus Sums In A Grid · medium
• Shortest Subarray With Sum At Least K · hard
• Car Pooling · medium

Heap index · Darbar hub

Darbar slot 278 of Tensor-to-Tenant · Previous · Next.