my-solutions/leetcode/1582-special-positions-in-a-binary-matrix/readme.md

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1582. Special Positions in a Binary Matrix

Given an m x n binary matrix mat, return the number of special positions in mat.

A position (i, j) is called special if mat[i][j] == 1 and all other elements in row i and column j are 0 (rows and columns are 0-indexed).