Leetcode Problem 750. Number Of Corner Rectangles

750. Number Of Corner Rectangles

Leetcode Solutions

Initialize a 2D array count with dimensions equal to the number of columns in the grid, initialized to 0.
Initialize a variable total to 0 to keep track of the total number of rectangles.
Iterate through each row of the grid. a. For each pair of '1's in the current row (at positions i and j), do the following: i. Add count[i][j] to total because each previous occurrence of this pair means a new rectangle can be formed. ii. Increment count[i][j] to indicate that we have found another occurrence of this pair.
Return the value of total.

Programming Language

Purpose:

General Question

Debug My Code

image/screenshot of info(optional)

Full Screen