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Leetcode 766. Toeplitz Matrix

Check whether every top-left to bottom-right diagonal in an m x n matrix contains identical values (a Toeplitz matrix), returning true if all diagonals are constant and false otherwise. Follow-ups consider streaming/limited-memory scenarios where you can only load one row or part of a row at a time.

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Mid September, 2025

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Early August, 2025

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Late March, 2025

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