Has anyone of you ever implemented a Fibonacci-Heap? I did so a few years back, but it was several orders of magnitude slower than using array-based BinHeaps.
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I also did a small experiment with Fibonacci heap. Here is the link for the details: Experimenting-with-dijkstras-algorithm. I just googled the terms "Fibonacci heap java" and tried a few existing open-source implementation of the Fibonacci heap. It seems that some of them have some performance issue, but there are some which is quite good. At least, they are beating the naive and the binary heap PQ performance in my test. Maybe they can help to implement the efficient one.