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Spiral Matrix traversal (boundary simulation).

Spiral traversal tests careful boundary management more than algorithmic insight. The signal is shrinking four boundaries layer by layer without double-visiting a row or column. Here is the answer.

Updated Aug 2026 · Grounded in real Applied AI Engineer interview loops and written to a senior-engineer editorial bar.

Spiral traversal tests careful boundary management more than algorithmic insight. The signal is shrinking four boundaries layer by layer without double-visiting a row or column. Here is the answer.

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