Leetcode Problem 1277. Count Square Submatrices with All Ones

1277. Count Square Submatrices with All Ones

Leetcode Solutions

Dynamic Programming Approach

  1. Initialize a variable count to 0 to keep track of the total number of squares.
  2. Iterate over each cell in the matrix.
  3. If the cell's value is 1 and it is not on the first row or first column, calculate the size of the largest square ending at that cell as one plus the minimum of the sizes of squares ending at the cells directly above, to the left, and diagonally above-left.
  4. Update the cell's value with the size of the largest square ending at that cell.
  5. Add the cell's value to count.
  6. Return count.
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Brute Force Approach

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