Leetcode Problem 2768. Number of Black Blocks

2768. Number of Black Blocks

Leetcode Solutions

Initialize a hash map to keep track of the count of black cells in each block.
For each black cell in coordinates, consider the four possible blocks it can be part of and increment their counts in the hash map.
Initialize a result array arr of size 5 with all elements set to 0.
Iterate over the hash map and for each block count found, increment the corresponding index in arr.
Calculate the total number of blocks with black cells by summing the counts in arr.
Subtract this sum from the total number of possible blocks to get the count of blocks with 0 black cells and store it in arr[0].
Return the result array arr.

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