Darbar 456 — Find The Longest Substring Containing Vowels In Even Counts

Medium

Darbar · String

Catalog slot 456 of 548 (source id 408). Topic string / prefix sum.

Solve on LeetCode: Find The Longest Substring Containing Vowels In Even Counts. 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_456.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

• Maximize The Confusion Of An Exam · medium
• Minimum White Tiles After Covering With Carpets · hard

String index · Darbar hub

Darbar slot 456 of Tensor-to-Tenant · Previous · Next.