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dsa3 min read

Calculate trapped water in a 3D height map using BFS with a min-heap to process cells from shortest boundary inward.

March 19, 2026Read →

dsa3 min read

Find minimum time to swim from top-left to bottom-right in a grid where time = max elevation on the path.

March 19, 2026Read →

dsa3 min read

Find the smallest range that contains at least one element from each of K sorted lists using a sliding K-way merge.

March 19, 2026Read →

dsa2 min read

Find the nth super ugly number with prime factors only from a given list using K-pointer dynamic programming.

March 19, 2026Read →

dsa2 min read

Find minimum fuel stops to reach the target by greedily selecting the largest available fuel stations when running low.

March 19, 2026Read →

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