Contraction Hierarchy Java Implementation [closed]

Question

I want to implement Contraction Hierarchy (CH) shortest path in JAVA. So for reference I want some already implemented java version of this algorithm or a step by step algorithm pseudo code. So can you please give me any such reference so that I can implement it?

Answer 1

Well actually I know 2 projects implementing this algorithm one is written in Java and it is GraphHopper

Then other one is OSRM and it's in C++

Answer 2

a good reference is here. start implementation now...!