Darbar 410 — Valid Parenthesis String

Medium

Darbar · Stack

Catalog slot 410 of 548 (source id 117). Topic stack / dp based.

Solve on LeetCode: Valid Parenthesis String. 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.

Evidence (cookiecutter problem_410.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

• Longest Valid Parentheses · hard
• Trapping Rain Water · hard
• Maximal Rectangle · hard
• Minimum Number Of Increments On Subarrays To Form A Target Array · hard

Stack index · Darbar hub

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