7 lines
281 B
Markdown
7 lines
281 B
Markdown
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# 1582. Special Positions in a Binary Matrix
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Given an m x n binary matrix mat, return the number of special positions in mat.
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A position (`i`, `j`) is called special if `mat[i][j]` == `1`
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and all other elements in row `i` and column `j` are `0` (rows and columns are 0-indexed).
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