Darbar 039 — Decode Xored Array

Easy

Darbar · Array

Catalog slot 39 of 548 (source id 143). Topic array / simple array.

Solve on LeetCode: Decode Xored Array. 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: Timed routing (weeks 1-15, slots 1-120). Warmup: LeetCode-style easy problems (15 min each). Exam: Weekly timed block, 3-5 problems in 60 minutes.

Also filed under: array / bit manipulation, bit manipulation / simple bit manipulation.

Evidence (cookiecutter problem_039.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

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• Concatenation Of Array · easy
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Array index · Darbar hub

Darbar slot 39 of Tensor-to-Tenant · Previous · Next.