Search⌘ K
AI Features
Home
Courses
Grokking the Coding Interview Patterns in C++

Solution: Number of Spaces Cleaning Robot Cleaned

Understand how to implement a solution that tracks a cleaning robot navigating a binary matrix. Explore matrix traversal techniques and bitwise operations to count unique cleaned spaces efficiently without extra memory.

We'll cover the following...

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 ...