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Solution: Count Negative Numbers in a Sorted Matrix

Explore how to count negative numbers in a sorted matrix by leveraging its non-increasing row and column order. Understand the step-by-step algorithm that optimizes the search by starting from the rightmost element and moving left, reducing overall time complexity to O(m+n). This lesson helps you implement a solution that traverses the matrix efficiently while using only constant extra space.

Statement

Given a matrix grid of size m  nm \ * \ n, where each row and column is sorted in non-increasing order, find and return the total count of negative numbers in the matrix.

Constraints:

  • mm ==== grid.length

  • nn ...