Darbar 532 — Distinct Echo Substrings

Hard

Darbar · Trie

Catalog slot 532 of 548 (source id 1091). Topic trie / dp based.

Solve on LeetCode: Distinct Echo Substrings. 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: Mock and personal gauntlet (weeks 91-108, slots 471-548). Warmup: Two-problem blocks (45 min). Exam: Full mock interviews scored on a rubric.

Also filed under: trie / sliding window.

Evidence (cookiecutter problem_532.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

• Word Break · medium

Trie index · Darbar hub

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