Maximum Sum of an Hourglass
Published in
2 min readOct 2, 2022
You are given an m x n
integer matrix grid
.
We define an hourglass as a part of the matrix with the following form:
Return the maximum sum of the elements of an hourglass.
Note that an hourglass cannot be rotated and must be entirely contained within the matrix.
Example 1:
Input: grid =…