Dev Tools · 2h ago
Rust CLI Implements Dijkstra's Shortest Path with Min-Heap Trick
A developer built a command-line tool in Rust that finds shortest paths in weighted graphs using Dijkstra's algorithm. The implementation overcomes Rust's max-heap BinaryHeap by reversing the Ord trait to create a min-priority queue. It also reconstructs paths via predecessor tracking and rejects negative weights at parse time.
Meridian48 take
A neat demonstration of Rust's type system and algorithm fundamentals, but unlikely to break new ground for experienced graph programmers.
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A Shortest-Path CLI in Rust — Making a Min-Heap from a Max-Heap, Path Reconstruction, and Rejecting Negative Weights →
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