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Grokking the Coding Interview Patterns in C#

Solution: Number of Spaces Cleaning Robot Cleaned

Explore how a cleaning robot moves in a binary matrix, cleaning unique spaces while navigating obstacles. Learn to simulate its movement, detect cycles, and efficiently track cleaned cells by manipulating bits in place.

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Statement

You are given a 0-indexed 2D binary matrix, room, representing a room of size m×nm \times n. In this matrix, 00 represents an empty space, while 11 represents a space occupied by an object. The top-left corner of the room is always empty ...