Leetcode Problem 1582. Special Positions in a Binary Matrix

1582. Special Positions in a Binary Matrix

Leetcode Solutions

Precompute the Number of Ones in Each Row and Column

  1. Initialize rowCount and colCount arrays to store the count of ones in each row and column respectively.
  2. Iterate over the matrix to fill rowCount and colCount with the appropriate counts.
  3. Initialize a variable specialCount to keep track of the number of special positions found.
  4. Iterate over the matrix again, and for each cell (i, j) with a value of 1, check if rowCount[i] and colCount[j] are both equal to 1.
  5. If they are, increment specialCount as we have found a special position.
  6. Return the value of specialCount.
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