Leetcode Problem 1687. Delivering Boxes from Storage to Ports

1687. Delivering Boxes from Storage to Ports

Leetcode Solutions

DP + Sliding Window Optimization

  1. Initialize a DP array dp with size n+1 (where n is the number of boxes) and set all values to infinity, except dp[0] which is set to 0.
  2. Initialize variables to keep track of the current weight sum, the starting index of the sliding window start, and the number of different consecutive ports diff.
  3. Iterate through each box, expanding the sliding window to include as many boxes as possible within the constraints.
  4. If the number of boxes or total weight exceeds the limits, shrink the sliding window from the start until the constraints are met.
  5. Update the dp array with the minimum number of trips needed to deliver boxes up to the current index.
  6. Return the last value in the dp array, which represents the minimum number of trips needed to deliver all boxes.
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Greedy Approach with Sorting

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