Darbar 170 — Reduce Array Size To The Half
Medium
Darbar · Greedy
Catalog slot 170 of 548 (source id 1377). Topic greedy / hashing.
Solve on LeetCode: Reduce Array Size To The Half. Do not treat this page as a statement dump.
Aligned T2T band: weeks 46–57. Start at Week 46. Full map: Darbar hub.
Pattern block: State machines and simulations (weeks 16-30, slots 121-200). Warmup: Simulation and state-transition drills. Exam: 2-3 state-machine problems in 60 minutes.
Also filed under: heap / hashing.
Triangulation — Hashing: Darbar speed is Frequency and lookup patterns; Forge depth is Consistent/rendezvous hashing; production artifact is Tenant-aware routing and caches.
Evidence (cookiecutter problem_170.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
- Longest Palindrome · easy
- Partition Labels · medium
- Minimum Operations To Make The Array Alternating · medium
- Find Original Array From Doubled Array · medium
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