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Decode ways DP: how do you handle 0 and 06 edge cases?

Q: Decode ways DP: how do you handle 0 and 06 edge cases?

**Core concept.** Decode ways DP: how do you handle 0 and 06 edge cases? is a classic interview signal. Input n steps Optimal O(n log n) Result Verified How it works — use optimal structure, maintain invariants, handle empty/single/duplicate. Brute O(n²) vs optimal O(n) or O(n log n). | | Brute | Optimal | |---|---|---| |

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Core concept. Decode ways DP: how do you handle 0 and 06 edge cases? is a classic interview signal.

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