Search⌘ K
AI Features

Solution: Count Negative Numbers in a Sorted Matrix

Understand how to efficiently count negative numbers in a matrix sorted in non-increasing order by rows and columns. Learn a linear time algorithm that starts from the matrix's rightmost elements and moves left to identify negative values, optimizing the search using previous row indices. This lesson helps you apply a practical approach to solve matrix problems with constant space complexity.

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. ...