IT Services Circle

May 4, 2025 · Fundamentals

LeetCode 407 – Trapping Rain Water II solved with a Dijkstra‑style Priority Queue

The article first discusses how many large companies now filter candidates by strict academic degree requirements, then presents LeetCode problem 407 (Trapping Rain Water II) and provides a detailed Dijkstra‑variant solution using a min‑heap, including full Java and C++ implementations and complexity analysis.