Leetcode Problem 1292. Maximum Side Length of a Square with Sum Less than or Equal to Threshold

1292. Maximum Side Length of a Square with Sum Less than or Equal to Threshold

Leetcode Solutions

Prefix Sum with Binary Search

  1. Initialize the prefix sum matrix with dimensions (m+1) x (n+1).
  2. Fill in the prefix sum matrix using dynamic programming.
  3. Initialize variables for the binary search (low, high, and max_side_length).
  4. Perform binary search: a. Calculate the mid value as the average of low and high. b. Check if there is a square with side length 'mid' and sum less than or equal to the threshold. c. If such a square exists, update max_side_length and set low to mid + 1. d. If not, set high to mid - 1.
  5. Continue the binary search until low is greater than high.
  6. Return max_side_length as the result.
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Prefix Sum with Sliding Window

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