Leetcode Problem 1878. Get Biggest Three Rhombus Sums in a Grid

1878. Get Biggest Three Rhombus Sums in a Grid

Leetcode Solutions

Brute-Force with Diagonal Prefix Sums

  1. Compute prefix sums for both diagonals of the grid.
  2. Initialize a set to store the largest three distinct rhombus sums.
  3. Iterate over all possible centers of rhombuses in the grid.
  4. For each center, try all possible sizes of rhombuses that can be formed.
  5. Calculate the border sum of each rhombus using the diagonal prefix sums.
  6. Add the calculated sum to the set if it's not already present.
  7. If the set contains more than three elements, remove the smallest one.
  8. After iterating through all centers and sizes, convert the set to a list and sort it in descending order.
  9. Return the sorted list as the result.
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