Darbar 407 — Trapping Rain Water
Hard
Darbar · Stack
Catalog slot 407 of 548 (source id 114). Topic stack / dp based.
Solve on LeetCode: Trapping Rain Water. Do not treat this page as a statement dump.
Aligned T2T band: weeks 1–6. Start at Week 1. Full map: Darbar hub.
Pattern block: Advanced and interview fusion (weeks 61-90, slots 361-470). Warmup: Classic DP and greedy patterns. Exam: Mixed 4-problem block mirroring a real interview.
Also filed under: stack / two pointer.
Evidence (cookiecutter problem_407.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 Valid Parentheses · hard
- Maximal Rectangle · hard
- Minimum Number Of Increments On Subarrays To Form A Target Array · hard
- Valid Parenthesis String · medium
Darbar slot 407 of Tensor-to-Tenant · Previous · Next.